--- a/browser/components/migration/tests/unit/test_fx_telemetry.js
+++ b/browser/components/migration/tests/unit/test_fx_telemetry.js
@@ -1,17 +1,13 @@
 /* Any copyright is dedicated to the Public Domain.
  * http://creativecommons.org/publicdomain/zero/1.0/ */
 
 "use strict";
 
-function run_test() {
-  run_next_test();
-}
-
 function readFile(file) {
   let stream = Cc["@mozilla.org/network/file-input-stream;1"]
                .createInstance(Ci.nsIFileInputStream);
   stream.init(file, -1, -1, Ci.nsIFileInputStream.CLOSE_ON_EOF);
 
   let sis = Cc["@mozilla.org/scriptableinputstream;1"]
             .createInstance(Ci.nsIScriptableInputStream);
   sis.init(stream);

--- a/browser/components/newtab/tests/xpcshell/test_NewTabPrefsProvider.js
+++ b/browser/components/newtab/tests/xpcshell/test_NewTabPrefsProvider.js
@@ -2,20 +2,16 @@
 
 const Cu = Components.utils;
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource://gre/modules/Preferences.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "NewTabPrefsProvider",
     "resource:///modules/NewTabPrefsProvider.jsm");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_observe() {
   let prefsMap = NewTabPrefsProvider.prefs.prefsMap;
   for (let prefName of prefsMap.keys()) {
     let prefValueType = prefsMap.get(prefName);
 
     let beforeVal;
     let afterVal;
 

--- a/browser/components/newtab/tests/xpcshell/test_NewTabSearchProvider.js
+++ b/browser/components/newtab/tests/xpcshell/test_NewTabSearchProvider.js
@@ -7,20 +7,16 @@ Cu.import("resource://gre/modules/Servic
 XPCOMUtils.defineLazyModuleGetter(this, "NewTabSearchProvider",
     "resource:///modules/NewTabSearchProvider.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "ContentSearch",
                                   "resource:///modules/ContentSearch.jsm");
 
 // ensure a profile exists
 do_get_profile();
 
-function run_test() {
-  run_next_test();
-}
-
 function hasProp(obj) {
   return function(aProp) {
     ok(obj.hasOwnProperty(aProp), `expect to have property ${aProp}`);
   };
 }
 
 add_task(async function test_search() {
   ContentSearch.init();

--- a/browser/components/places/tests/unit/test_421483.js
+++ b/browser/components/places/tests/unit/test_421483.js
@@ -7,20 +7,16 @@
 
 const SMART_BOOKMARKS_PREF = "browser.places.smartBookmarksVersion";
 
 var gluesvc = Cc["@mozilla.org/browser/browserglue;1"].
                 getService(Ci.nsIObserver);
 // Avoid default bookmarks import.
 gluesvc.observe(null, "initial-migration-will-import-default-bookmarks", "");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function smart_bookmarks_disabled() {
   Services.prefs.setIntPref("browser.places.smartBookmarksVersion", -1);
   await rebuildSmartBookmarks();
 
   let smartBookmarkItemIds =
     PlacesUtils.annotations.getItemsWithAnnotation(SMART_BOOKMARKS_ANNO);
   Assert.equal(smartBookmarkItemIds.length, 0);
 

--- a/browser/components/places/tests/unit/test_PUIU_makeTransaction.js
+++ b/browser/components/places/tests/unit/test_PUIU_makeTransaction.js
@@ -323,12 +323,8 @@ add_test(function check_annotations() {
     PlacesUtils.annotations.getItemsWithAnnotation(PlacesUIUtils.DESCRIPTION_ANNO, {});
   do_check_eq(descriptions.length, 4);
 
   // Only the original bookmarks should have this annotation.
   let others = PlacesUtils.annotations.getItemsWithAnnotation("random-anno", {});
   do_check_eq(others.length, 3);
   run_next_test();
 });
-
-function run_test() {
-  run_next_test();
-}

--- a/browser/components/places/tests/unit/test_browserGlue_urlbar_defaultbehavior_migration.js
+++ b/browser/components/places/tests/unit/test_browserGlue_urlbar_defaultbehavior_migration.js
@@ -7,20 +7,16 @@ const TOPIC_BROWSERGLUE_TEST = "browser-
 const TOPICDATA_BROWSERGLUE_TEST = "force-ui-migration";
 const DEFAULT_BEHAVIOR_PREF = "browser.urlbar.default.behavior";
 const AUTOCOMPLETE_PREF = "browser.urlbar.autocomplete.enabled";
 
 var gBrowserGlue = Cc["@mozilla.org/browser/browserglue;1"]
                      .getService(Ci.nsIObserver);
 var gGetBoolPref = Services.prefs.getBoolPref;
 
-function run_test() {
-  run_next_test();
-}
-
 do_register_cleanup(cleanup);
 
 function cleanup() {
   let prefix = "browser.urlbar.suggest.";
   for (let type of ["history", "bookmark", "openpage", "history.onlyTyped"]) {
     Services.prefs.clearUserPref(prefix + type);
   }
   Services.prefs.clearUserPref("browser.migration.version");

--- a/browser/components/places/tests/unit/test_clearHistory_shutdown.js
+++ b/browser/components/places/tests/unit/test_clearHistory_shutdown.js
@@ -34,20 +34,16 @@ const FTP_URL = "ftp://localhost/clearHi
 var formHistoryStartup = Cc["@mozilla.org/satchel/form-history-startup;1"].
                          getService(Ci.nsIObserver);
 formHistoryStartup.observe(null, "profile-after-change", null);
 XPCOMUtils.defineLazyModuleGetter(this, "FormHistory",
                                   "resource://gre/modules/FormHistory.jsm");
 
 var timeInMicroseconds = Date.now() * 1000;
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_execute() {
   do_print("Initialize browserglue before Places");
 
   // Avoid default bookmarks import.
   let glue = Cc["@mozilla.org/browser/browserglue;1"].
              getService(Ci.nsIObserver);
   glue.observe(null, "initial-migration-will-import-default-bookmarks", null);
   glue.observe(null, "test-initialize-sanitizer", null);

--- a/browser/components/sessionstore/test/unit/test_backup_once.js
+++ b/browser/components/sessionstore/test/unit/test_backup_once.js
@@ -14,20 +14,16 @@ var SessionFile;
 Cu.import("resource://testing-common/AppInfo.jsm", this);
 updateAppInfo({
   name: "SessionRestoreTest",
   ID: "{230de50e-4cd1-11dc-8314-0800200c9a66}",
   version: "1",
   platformVersion: "",
 });
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function init() {
   // Make sure that we have a profile before initializing SessionFile
   let profd = do_get_profile();
   SessionFile = Cu.import("resource:///modules/sessionstore/SessionFile.jsm", {}).SessionFile;
   Paths = SessionFile.Paths;
 
   let source = do_get_file("data/sessionstore_valid.js");
   source.copyTo(profd, "sessionstore.js");

--- a/browser/components/sessionstore/test/unit/test_histogram_corrupt_files.js
+++ b/browser/components/sessionstore/test/unit/test_histogram_corrupt_files.js
@@ -105,12 +105,8 @@ add_task(async function test_all_files_c
 
   await SessionFile.read();
   // Checking if the histogram is positively updated.
   let h = Telemetry.getHistogramById(HistogramId);
   let s = h.snapshot();
   Assert.equal(s.counts[1], 1, "One probe for the 'true' bucket.");
   Assert.equal(s.counts[0], 0, "No probes in the 'false' bucket.");
 });
-
-function run_test() {
-  run_next_test();
-}

--- a/browser/components/sessionstore/test/unit/test_migration_lz4compression.js
+++ b/browser/components/sessionstore/test/unit/test_migration_lz4compression.js
@@ -10,20 +10,16 @@ var SessionFile;
 Cu.import("resource://testing-common/AppInfo.jsm", this);
 updateAppInfo({
   name: "SessionRestoreTest",
   ID: "{230de50e-4cd1-11dc-8314-0800200c9a66}",
   version: "1",
   platformVersion: "",
 });
 
-function run_test() {
-  run_next_test();
-}
-
 function promise_check_exist(path, shouldExist) {
   return (async function() {
     do_print("Ensuring that " + path + (shouldExist ? " exists" : " does not exist"));
     if ((await OS.File.exists(path)) != shouldExist) {
       throw new Error("File " + path + " should " + (shouldExist ? "exist" : "not exist"));
     }
   })();
 }

--- a/browser/experiments/test/xpcshell/test_activate.js
+++ b/browser/experiments/test/xpcshell/test_activate.js
@@ -19,20 +19,16 @@ function ManifestEntry(data) {
   this.xpiHash   = data.xpiHash || EXPERIMENT1_XPI_SHA1;
   this.appName   = data.appName || ["XPCShell"];
   this.channel   = data.appName || ["nightly"];
   this.startTime = data.startTime || new Date(2010, 0, 1, 12).getTime() / 1000;
   this.endTime   = data.endTime || new Date(9001, 0, 1, 12).getTime() / 1000;
   this.maxActiveSeconds = data.maxActiveSeconds || 5 * SEC_IN_ONE_DAY;
 }
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_setup() {
   loadAddonManager();
   gPolicy = new Experiments.Policy();
 
   gHttpServer = new HttpServer();
   gHttpServer.start(-1);
   let port = gHttpServer.identity.primaryPort;
   gHttpRoot = "http://localhost:" + port + "/";

--- a/browser/experiments/test/xpcshell/test_api.js
+++ b/browser/experiments/test/xpcshell/test_api.js
@@ -34,20 +34,16 @@ function uninstallExperimentAddons() {
 function testCleanup(experimentsInstance) {
   return (async function() {
     await promiseRestartManager();
     await uninstallExperimentAddons();
     await removeCacheFile();
   })();
 }
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_setup() {
   loadAddonManager();
 
   gHttpServer = new HttpServer();
   gHttpServer.start(-1);
   let port = gHttpServer.identity.primaryPort;
   gHttpRoot = "http://localhost:" + port + "/";
   gDataRoot = gHttpRoot + "data/";

--- a/browser/experiments/test/xpcshell/test_cache.js
+++ b/browser/experiments/test/xpcshell/test_cache.js
@@ -14,20 +14,16 @@ const MS_IN_ONE_DAY   = SEC_IN_ONE_DAY *
 
 var gHttpServer          = null;
 var gHttpRoot            = null;
 var gDataRoot            = null;
 var gPolicy              = null;
 var gManifestObject      = null;
 var gManifestHandlerURI  = null;
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_setup() {
   loadAddonManager();
   await removeCacheFile();
 
   gHttpServer = new HttpServer();
   gHttpServer.start(-1);
   let port = gHttpServer.identity.primaryPort;
   gHttpRoot = "http://localhost:" + port + "/";

--- a/browser/experiments/test/xpcshell/test_cacherace.js
+++ b/browser/experiments/test/xpcshell/test_cacherace.js
@@ -14,20 +14,16 @@ const MS_IN_ONE_DAY   = SEC_IN_ONE_DAY *
 
 var gHttpServer          = null;
 var gHttpRoot            = null;
 var gDataRoot            = null;
 var gPolicy              = null;
 var gManifestObject      = null;
 var gManifestHandlerURI  = null;
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_setup() {
   loadAddonManager();
   await removeCacheFile();
 
   gHttpServer = new HttpServer();
   gHttpServer.start(-1);
   let port = gHttpServer.identity.primaryPort;
   gHttpRoot = "http://localhost:" + port + "/";

--- a/browser/experiments/test/xpcshell/test_conditions.js
+++ b/browser/experiments/test/xpcshell/test_conditions.js
@@ -33,20 +33,16 @@ function ManifestEntry(data) {
 
 function applicableFromManifestData(data, policy) {
   let manifestData = new ManifestEntry(data);
   let entry = new Experiments.ExperimentEntry(policy);
   entry.initFromManifestData(manifestData);
   return entry.isApplicable();
 }
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_setup() {
   createAppInfo();
   do_get_profile();
   startAddonManagerOnly();
   await TelemetryController.testSetup();
   gPolicy = new Experiments.Policy();
 
   patchPolicy(gPolicy, {

--- a/browser/experiments/test/xpcshell/test_disableExperiments.js
+++ b/browser/experiments/test/xpcshell/test_disableExperiments.js
@@ -16,20 +16,16 @@ const MS_IN_ONE_DAY   = SEC_IN_ONE_DAY *
 
 var gHttpServer          = null;
 var gHttpRoot            = null;
 var gDataRoot            = null;
 var gPolicy              = null;
 var gManifestObject      = null;
 var gManifestHandlerURI  = null;
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_setup() {
   loadAddonManager();
 
   gHttpServer = new HttpServer();
   gHttpServer.start(-1);
   let port = gHttpServer.identity.primaryPort;
   gHttpRoot = "http://localhost:" + port + "/";
   gDataRoot = gHttpRoot + "data/";

--- a/browser/experiments/test/xpcshell/test_nethang_bug1012924.js
+++ b/browser/experiments/test/xpcshell/test_nethang_bug1012924.js
@@ -3,20 +3,16 @@
 
 "use strict";
 
 Cu.import("resource://testing-common/httpd.js");
 Cu.import("resource:///modules/experiments/Experiments.jsm");
 
 const MANIFEST_HANDLER         = "manifests/handler";
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_setup() {
   loadAddonManager();
   do_get_profile();
 
   let httpServer = new HttpServer();
   httpServer.start(-1);
   let port = httpServer.identity.primaryPort;
   let httpRoot = "http://localhost:" + port + "/";

--- a/browser/experiments/test/xpcshell/test_previous_provider.js
+++ b/browser/experiments/test/xpcshell/test_previous_provider.js
@@ -6,20 +6,16 @@
 Cu.import("resource://gre/modules/Promise.jsm");
 Cu.import("resource:///modules/experiments/Experiments.jsm");
 Cu.import("resource://testing-common/httpd.js");
 
 var gDataRoot;
 var gHttpServer;
 var gManifestObject;
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test_setup() {
   loadAddonManager();
   do_get_profile();
 
   gHttpServer = new HttpServer();
   gHttpServer.start(-1);
   let httpRoot = "http://localhost:" + gHttpServer.identity.primaryPort + "/";
   gDataRoot = httpRoot + "data/";

--- a/browser/experiments/test/xpcshell/test_telemetry.js
+++ b/browser/experiments/test/xpcshell/test_telemetry.js
@@ -34,20 +34,16 @@ function checkEvent(event, id, data) {
     Assert.equal(event.length, data.length + 2, "event entry count should match expected count");
     for (var i = 0; i < data.length; ++i) {
       Assert.equal(typeof(event[i + 2]), "string", "event entry should be a string");
       Assert.equal(event[i + 2], data[i], "event entry should match expected entry");
     }
   }
 }
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(async function test_setup() {
   loadAddonManager();
 
   gHttpServer = new HttpServer();
   gHttpServer.start(-1);
   let port = gHttpServer.identity.primaryPort;
   gHttpRoot = "http://localhost:" + port + "/";
   gDataRoot = gHttpRoot + "data/";

--- a/browser/experiments/test/xpcshell/test_upgrade.js
+++ b/browser/experiments/test/xpcshell/test_upgrade.js
@@ -41,12 +41,8 @@ add_task(async function test_upgrade() {
   Assert.ok(e.enabled);
 });
 
 add_task(async function test_missing() {
   let e = new Experiments.ExperimentEntry();
   delete cacheData._name;
   Assert.ok(!e.initFromCacheData(cacheData));
 });
-
-function run_test() {
-  run_next_test();
-}

--- a/devtools/client/memory/test/unit/test_action-clear-snapshots_01.js
+++ b/devtools/client/memory/test/unit/test_action-clear-snapshots_01.js
@@ -4,20 +4,16 @@
 "use strict";
 
 // Test clearSnapshots deletes snapshots with READ censuses
 
 let { takeSnapshotAndCensus, clearSnapshots } = require("devtools/client/memory/actions/snapshot");
 let { actions } = require("devtools/client/memory/constants");
 const { treeMapState } = require("devtools/client/memory/constants");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   dispatch(takeSnapshotAndCensus(front, heapWorker));

--- a/devtools/client/memory/test/unit/test_action-clear-snapshots_02.js
+++ b/devtools/client/memory/test/unit/test_action-clear-snapshots_02.js
@@ -3,20 +3,16 @@
 
 "use strict";
 
 // Test clearSnapshots preserves snapshots with state != READ or ERROR
 
 let { takeSnapshotAndCensus, clearSnapshots, takeSnapshot } = require("devtools/client/memory/actions/snapshot");
 let { snapshotState: states, treeMapState, actions } = require("devtools/client/memory/constants");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   ok(true, "create a snapshot with a census in SAVED state");

--- a/devtools/client/memory/test/unit/test_action-clear-snapshots_03.js
+++ b/devtools/client/memory/test/unit/test_action-clear-snapshots_03.js
@@ -3,20 +3,16 @@
 
 "use strict";
 
 // Test clearSnapshots deletes snapshots with state ERROR
 
 let { takeSnapshotAndCensus, clearSnapshots } = require("devtools/client/memory/actions/snapshot");
 let { snapshotState: states, treeMapState, actions } = require("devtools/client/memory/constants");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   ok(true, "create a snapshot with a treeMap");

--- a/devtools/client/memory/test/unit/test_action-clear-snapshots_04.js
+++ b/devtools/client/memory/test/unit/test_action-clear-snapshots_04.js
@@ -3,20 +3,16 @@
 
 "use strict";
 
 // Test clearSnapshots deletes several snapshots
 
 let { takeSnapshotAndCensus, clearSnapshots } = require("devtools/client/memory/actions/snapshot");
 let { snapshotState: states, actions, treeMapState } = require("devtools/client/memory/constants");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   ok(true, "create 3 snapshots with a saved census");

--- a/devtools/client/memory/test/unit/test_action-clear-snapshots_05.js
+++ b/devtools/client/memory/test/unit/test_action-clear-snapshots_05.js
@@ -3,20 +3,16 @@
 
 "use strict";
 
 // Test clearSnapshots deletes several snapshots
 
 let { takeSnapshotAndCensus, clearSnapshots } = require("devtools/client/memory/actions/snapshot");
 let { actions, treeMapState } = require("devtools/client/memory/constants");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   ok(true, "create 2 snapshots with a saved census");

--- a/devtools/client/memory/test/unit/test_action-clear-snapshots_06.js
+++ b/devtools/client/memory/test/unit/test_action-clear-snapshots_06.js
@@ -13,20 +13,16 @@ const {
   actions,
   treeMapState
 } = require("devtools/client/memory/constants");
 const {
   toggleDiffing,
   selectSnapshotForDiffingAndRefresh
 } = require("devtools/client/memory/actions/diffing");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   ok(true, "create 2 snapshots with a saved census");

--- a/devtools/client/memory/test/unit/test_action-export-snapshot.js
+++ b/devtools/client/memory/test/unit/test_action-export-snapshot.js
@@ -4,20 +4,16 @@
 "use strict";
 
 // Test exporting a snapshot to a user specified location on disk.
 
 let { exportSnapshot } = require("devtools/client/memory/actions/io");
 let { takeSnapshotAndCensus } = require("devtools/client/memory/actions/snapshot");
 let { actions, treeMapState } = require("devtools/client/memory/constants");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   let destPath = yield createTempFile();

--- a/devtools/client/memory/test/unit/test_action-filter-01.js
+++ b/devtools/client/memory/test/unit/test_action-filter-01.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 
 "use strict";
 
 // Test setting the filter string.
 
 let { setFilterString } = require("devtools/client/memory/actions/filter");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let store = Store();
   const { getState, dispatch } = store;
 
   equal(getState().filter, null, "no filter by default");
 
   dispatch(setFilterString("my filter"));
   equal(getState().filter, "my filter", "now we have the expected filter");

--- a/devtools/client/memory/test/unit/test_action-filter-02.js
+++ b/devtools/client/memory/test/unit/test_action-filter-02.js
@@ -5,20 +5,16 @@
 
 // Test that changing filter state properly refreshes the selected census.
 
 let { viewState, censusState } = require("devtools/client/memory/constants");
 let { setFilterStringAndRefresh } = require("devtools/client/memory/actions/filter");
 let { takeSnapshotAndCensus, selectSnapshotAndRefresh } = require("devtools/client/memory/actions/snapshot");
 let { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.CENSUS));

--- a/devtools/client/memory/test/unit/test_action-filter-03.js
+++ b/devtools/client/memory/test/unit/test_action-filter-03.js
@@ -6,20 +6,16 @@
 // Test that changing filter state in the middle of taking a snapshot results in
 // the properly fitered census.
 
 let { snapshotState: states, censusState, viewState } = require("devtools/client/memory/constants");
 let { setFilterString, setFilterStringAndRefresh } = require("devtools/client/memory/actions/filter");
 let { takeSnapshotAndCensus } = require("devtools/client/memory/actions/snapshot");
 let { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.CENSUS));

--- a/devtools/client/memory/test/unit/test_action-import-snapshot-and-census.js
+++ b/devtools/client/memory/test/unit/test_action-import-snapshot-and-census.js
@@ -7,20 +7,16 @@
  * Tests the task creator `importSnapshotAndCensus()` for the whole flow of
  * importing a snapshot, and its sub-actions.
  */
 
 let { actions, snapshotState: states, treeMapState } = require("devtools/client/memory/constants");
 let { exportSnapshot, importSnapshotAndCensus } = require("devtools/client/memory/actions/io");
 let { takeSnapshotAndCensus } = require("devtools/client/memory/actions/snapshot");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { subscribe, dispatch, getState } = store;
 
   let destPath = yield createTempFile();

--- a/devtools/client/memory/test/unit/test_action-import-snapshot-dominator-tree.js
+++ b/devtools/client/memory/test/unit/test_action-import-snapshot-dominator-tree.js
@@ -9,20 +9,16 @@
  * should be computed.
  */
 
 let { snapshotState, dominatorTreeState, viewState, treeMapState } =
   require("devtools/client/memory/constants");
 let { importSnapshotAndCensus } = require("devtools/client/memory/actions/io");
 let { changeViewAndRefresh } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { subscribe, dispatch, getState } = store;
 
   dispatch(changeViewAndRefresh(viewState.DOMINATOR_TREE, heapWorker));

--- a/devtools/client/memory/test/unit/test_action-select-snapshot.js
+++ b/devtools/client/memory/test/unit/test_action-select-snapshot.js
@@ -5,20 +5,16 @@
 
 /**
  * Tests the reducer responding to the action `selectSnapshot(snapshot)`
  */
 
 let actions = require("devtools/client/memory/actions/snapshot");
 let { snapshotState: states } = require("devtools/client/memory/constants");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   yield front.attach();
   let store = Store();
 
   for (let i = 0; i < 5; i++) {
     store.dispatch(actions.takeSnapshot(front));
   }

--- a/devtools/client/memory/test/unit/test_action-set-display-and-refresh-01.js
+++ b/devtools/client/memory/test/unit/test_action-set-display-and-refresh-01.js
@@ -10,20 +10,16 @@
  * `setCensusDisplayAndRefresh`.
  */
 
 let { censusDisplays, censusState, viewState } = require("devtools/client/memory/constants");
 let { setCensusDisplayAndRefresh } = require("devtools/client/memory/actions/census-display");
 let { takeSnapshotAndCensus, selectSnapshotAndRefresh } = require("devtools/client/memory/actions/snapshot");
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 // We test setting an invalid display, which triggers an assertion failure.
 EXPECTED_DTU_ASSERT_FAILURE_COUNT = 1;
 
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();

--- a/devtools/client/memory/test/unit/test_action-set-display-and-refresh-02.js
+++ b/devtools/client/memory/test/unit/test_action-set-display-and-refresh-02.js
@@ -18,20 +18,16 @@ let CUSTOM = {
   tooltip: "Custom tooltip",
   inverted: false,
   breakdown: {
     by: "internalType",
     then: { by: "count", bytes: true, count: false }
   }
 };
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.CENSUS));

--- a/devtools/client/memory/test/unit/test_action-set-display.js
+++ b/devtools/client/memory/test/unit/test_action-set-display.js
@@ -9,20 +9,16 @@
  * action for that.
  */
 
 let { censusDisplays, censusState, viewState } = require("devtools/client/memory/constants");
 let { setCensusDisplay } = require("devtools/client/memory/actions/census-display");
 let { takeSnapshotAndCensus } = require("devtools/client/memory/actions/snapshot");
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 // We test setting an invalid display, which triggers an assertion failure.
 EXPECTED_DTU_ASSERT_FAILURE_COUNT = 1;
 
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();

--- a/devtools/client/memory/test/unit/test_action-take-census.js
+++ b/devtools/client/memory/test/unit/test_action-take-census.js
@@ -6,20 +6,16 @@
 /**
  * Tests the async reducer responding to the action `takeCensus(heapWorker, snapshot)`
  */
 
 var { snapshotState: states, censusDisplays, censusState, viewState } = require("devtools/client/memory/constants");
 var actions = require("devtools/client/memory/actions/snapshot");
 var { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 // This tests taking a census on a snapshot that is still being read, which
 // triggers an assertion failure.
 EXPECTED_DTU_ASSERT_FAILURE_COUNT = 1;
 
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();

--- a/devtools/client/memory/test/unit/test_action-take-snapshot-and-census.js
+++ b/devtools/client/memory/test/unit/test_action-take-snapshot-and-census.js
@@ -6,20 +6,16 @@
 /**
  * Tests the task creator `takeSnapshotAndCensus()` for the whole flow of
  * taking a snapshot, and its sub-actions.
  */
 
 let { snapshotState: states, treeMapState } = require("devtools/client/memory/constants");
 let actions = require("devtools/client/memory/actions/snapshot");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
 
   let snapshotI = 0;
   let censusI = 0;

--- a/devtools/client/memory/test/unit/test_action-take-snapshot.js
+++ b/devtools/client/memory/test/unit/test_action-take-snapshot.js
@@ -5,20 +5,16 @@
 
 /**
  * Tests the async reducer responding to the action `takeSnapshot(front)`
  */
 
 let actions = require("devtools/client/memory/actions/snapshot");
 let { snapshotState: states } = require("devtools/client/memory/constants");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   yield front.attach();
   let store = Store();
 
   let unsubscribe = store.subscribe(checkState);
 
   let foundPendingState = false;

--- a/devtools/client/memory/test/unit/test_action-toggle-inverted-and-refresh-01.js
+++ b/devtools/client/memory/test/unit/test_action-toggle-inverted-and-refresh-01.js
@@ -15,20 +15,16 @@ const {
   setCensusDisplayAndRefresh
 } = require("devtools/client/memory/actions/census-display");
 const {
   takeSnapshotAndCensus,
   selectSnapshotAndRefresh,
 } = require("devtools/client/memory/actions/snapshot");
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.CENSUS));

--- a/devtools/client/memory/test/unit/test_action-toggle-inverted-and-refresh-02.js
+++ b/devtools/client/memory/test/unit/test_action-toggle-inverted-and-refresh-02.js
@@ -9,20 +9,16 @@
 const { censusDisplays, snapshotState: states, censusState, viewState } = require("devtools/client/memory/constants");
 const { takeSnapshotAndCensus } = require("devtools/client/memory/actions/snapshot");
 const {
   setCensusDisplay,
   setCensusDisplayAndRefresh,
 } = require("devtools/client/memory/actions/census-display");
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.CENSUS));

--- a/devtools/client/memory/test/unit/test_action-toggle-inverted.js
+++ b/devtools/client/memory/test/unit/test_action-toggle-inverted.js
@@ -3,20 +3,16 @@
 
 "use strict";
 
 // Test toggling the top level inversion state of the tree.
 
 const { censusDisplays } = require("devtools/client/memory/constants");
 const { setCensusDisplay } = require("devtools/client/memory/actions/census-display");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let store = Store();
   const { getState, dispatch } = store;
 
   dispatch(setCensusDisplay(censusDisplays.allocationStack));
   equal(getState().censusDisplay.inverted, false,
         "not inverted initially");
 

--- a/devtools/client/memory/test/unit/test_action-toggle-recording-allocations.js
+++ b/devtools/client/memory/test/unit/test_action-toggle-recording-allocations.js
@@ -4,20 +4,16 @@
 "use strict";
 
 /**
  * Test toggling the recording of allocation stacks.
  */
 
 let { toggleRecordingAllocationStacks } = require("devtools/client/memory/actions/allocations");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   equal(getState().allocations.recording, false, "not recording by default");
   equal(getState().allocations.togglingInProgress, false,

--- a/devtools/client/memory/test/unit/test_action_diffing_01.js
+++ b/devtools/client/memory/test/unit/test_action_diffing_01.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 
 "use strict";
 
 // Test toggling of diffing.
 
 const { toggleDiffing } = require("devtools/client/memory/actions/diffing");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   equal(getState().diffing, null, "not diffing by default");

--- a/devtools/client/memory/test/unit/test_action_diffing_02.js
+++ b/devtools/client/memory/test/unit/test_action_diffing_02.js
@@ -5,20 +5,16 @@
 
 // Test that toggling diffing unselects all snapshots.
 
 const { censusState, viewState } = require("devtools/client/memory/constants");
 const { toggleDiffing } = require("devtools/client/memory/actions/diffing");
 const { takeSnapshotAndCensus } = require("devtools/client/memory/actions/snapshot");
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
 
   dispatch(changeView(viewState.CENSUS));

--- a/devtools/client/memory/test/unit/test_action_diffing_03.js
+++ b/devtools/client/memory/test/unit/test_action_diffing_03.js
@@ -8,20 +8,16 @@
 const { diffingState, snapshotState, viewState } = require("devtools/client/memory/constants");
 const {
   toggleDiffing,
   selectSnapshotForDiffing
 } = require("devtools/client/memory/actions/diffing");
 const { takeSnapshot } = require("devtools/client/memory/actions/snapshot");
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 // We test that you (1) cannot select a snapshot that is not in a diffable
 // state, and (2) cannot select more than 2 snapshots for diffing. Both attempts
 // trigger assertion failures.
 EXPECTED_DTU_ASSERT_FAILURE_COUNT = 2;
 
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();

--- a/devtools/client/memory/test/unit/test_action_diffing_04.js
+++ b/devtools/client/memory/test/unit/test_action_diffing_04.js
@@ -15,20 +15,16 @@ const {
   selectSnapshotForDiffingAndRefresh
 } = require("devtools/client/memory/actions/diffing");
 const {
   takeSnapshot,
   readSnapshot
 } = require("devtools/client/memory/actions/snapshot");
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
   dispatch(changeView(viewState.CENSUS));
 

--- a/devtools/client/memory/test/unit/test_action_diffing_05.js
+++ b/devtools/client/memory/test/unit/test_action_diffing_05.js
@@ -22,20 +22,16 @@ const {
   setFilterStringAndRefresh,
 } = require("devtools/client/memory/actions/filter");
 const {
   takeSnapshot,
   readSnapshot,
 } = require("devtools/client/memory/actions/snapshot");
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   const { getState, dispatch } = store;
   dispatch(changeView(viewState.CENSUS));
 

--- a/devtools/client/memory/test/unit/test_dominator_trees_01.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_01.js
@@ -9,20 +9,16 @@ let {
   dominatorTreeState,
   treeMapState,
 } = require("devtools/client/memory/constants");
 let {
   takeSnapshotAndCensus,
   computeAndFetchDominatorTree,
 } = require("devtools/client/memory/actions/snapshot");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(takeSnapshotAndCensus(front, heapWorker));

--- a/devtools/client/memory/test/unit/test_dominator_trees_02.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_02.js
@@ -13,20 +13,16 @@ const {
 } = require("devtools/client/memory/constants");
 const {
   takeSnapshotAndCensus,
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeViewAndRefresh
 } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(takeSnapshotAndCensus(front, heapWorker));

--- a/devtools/client/memory/test/unit/test_dominator_trees_03.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_03.js
@@ -12,20 +12,16 @@ const {
 } = require("devtools/client/memory/constants");
 const {
   takeSnapshotAndCensus,
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeView
 } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.DOMINATOR_TREE));

--- a/devtools/client/memory/test/unit/test_dominator_trees_04.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_04.js
@@ -13,20 +13,16 @@ const {
 } = require("devtools/client/memory/constants");
 const {
   takeSnapshotAndCensus,
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeView
 } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
 
   for (let intermediateSnapshotState of [states.SAVING, states.READING, states.READ]) {
     dumpn("Testing switching to the DOMINATOR_TREE view in the middle of the " +
           `${intermediateSnapshotState} snapshot state`);

--- a/devtools/client/memory/test/unit/test_dominator_trees_05.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_05.js
@@ -13,20 +13,16 @@ let {
 } = require("devtools/client/memory/constants");
 let {
   takeSnapshotAndCensus,
   selectSnapshotAndRefresh,
 } = require("devtools/client/memory/actions/snapshot");
 
 let { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(takeSnapshotAndCensus(front, heapWorker));

--- a/devtools/client/memory/test/unit/test_dominator_trees_06.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_06.js
@@ -13,20 +13,16 @@ const {
   takeSnapshotAndCensus,
   fetchImmediatelyDominated,
 } = require("devtools/client/memory/actions/snapshot");
 const DominatorTreeLazyChildren
   = require("devtools/client/memory/dominator-tree-lazy-children");
 
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.DOMINATOR_TREE));

--- a/devtools/client/memory/test/unit/test_dominator_trees_07.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_07.js
@@ -14,20 +14,16 @@ const {
   takeSnapshotAndCensus,
   fetchImmediatelyDominated,
 } = require("devtools/client/memory/actions/snapshot");
 const DominatorTreeLazyChildren
   = require("devtools/client/memory/dominator-tree-lazy-children");
 
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.DOMINATOR_TREE));

--- a/devtools/client/memory/test/unit/test_dominator_trees_08.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_08.js
@@ -17,20 +17,16 @@ const {
 } = require("devtools/client/memory/actions/label-display");
 const {
   changeView,
 } = require("devtools/client/memory/actions/view");
 const {
   takeSnapshotAndCensus,
 } = require("devtools/client/memory/actions/snapshot");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.DOMINATOR_TREE));

--- a/devtools/client/memory/test/unit/test_dominator_trees_09.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_09.js
@@ -17,20 +17,16 @@ const {
 } = require("devtools/client/memory/actions/label-display");
 const {
   changeView,
 } = require("devtools/client/memory/actions/view");
 const {
   takeSnapshotAndCensus,
 } = require("devtools/client/memory/actions/snapshot");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.DOMINATOR_TREE));

--- a/devtools/client/memory/test/unit/test_dominator_trees_10.js
+++ b/devtools/client/memory/test/unit/test_dominator_trees_10.js
@@ -17,20 +17,16 @@ let {
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeView,
 } = require("devtools/client/memory/actions/view");
 const {
   setLabelDisplayAndRefresh,
 } = require("devtools/client/memory/actions/label-display");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.DOMINATOR_TREE));

--- a/devtools/client/memory/test/unit/test_individuals_01.js
+++ b/devtools/client/memory/test/unit/test_individuals_01.js
@@ -13,20 +13,16 @@ const {
 const {
   fetchIndividuals,
   takeSnapshotAndCensus,
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeView,
 } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 const EXPECTED_INDIVIDUAL_STATES = [
   individualsState.COMPUTING_DOMINATOR_TREE,
   individualsState.FETCHING,
   individualsState.FETCHED,
 ];
 
 add_task(function* () {
   let front = new StubbedMemoryFront();

--- a/devtools/client/memory/test/unit/test_individuals_02.js
+++ b/devtools/client/memory/test/unit/test_individuals_02.js
@@ -16,20 +16,16 @@ const {
   fetchIndividuals,
   takeSnapshotAndCensus,
   computeDominatorTree,
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeView,
 } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 const EXPECTED_INDIVIDUAL_STATES = [
   individualsState.COMPUTING_DOMINATOR_TREE,
   individualsState.FETCHING,
   individualsState.FETCHED,
 ];
 
 add_task(function* () {
   let front = new StubbedMemoryFront();

--- a/devtools/client/memory/test/unit/test_individuals_03.js
+++ b/devtools/client/memory/test/unit/test_individuals_03.js
@@ -18,20 +18,16 @@ const {
 const {
   changeView,
   popViewAndRefresh,
 } = require("devtools/client/memory/actions/view");
 const {
   selectSnapshotForDiffingAndRefresh,
 } = require("devtools/client/memory/actions/diffing");
 
-function run_test() {
-  run_next_test();
-}
-
 const EXPECTED_INDIVIDUAL_STATES = [
   individualsState.COMPUTING_DOMINATOR_TREE,
   individualsState.FETCHING,
   individualsState.FETCHED,
 ];
 
 add_task(function* () {
   let front = new StubbedMemoryFront();

--- a/devtools/client/memory/test/unit/test_individuals_04.js
+++ b/devtools/client/memory/test/unit/test_individuals_04.js
@@ -16,20 +16,16 @@ const {
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeView,
 } = require("devtools/client/memory/actions/view");
 const {
   setFilterString,
 } = require("devtools/client/memory/actions/filter");
 
-function run_test() {
-  run_next_test();
-}
-
 const EXPECTED_INDIVIDUAL_STATES = [
   individualsState.COMPUTING_DOMINATOR_TREE,
   individualsState.FETCHING,
   individualsState.FETCHED,
 ];
 
 add_task(function* () {
   let front = new StubbedMemoryFront();

--- a/devtools/client/memory/test/unit/test_individuals_05.js
+++ b/devtools/client/memory/test/unit/test_individuals_05.js
@@ -17,20 +17,16 @@ const {
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeView,
 } = require("devtools/client/memory/actions/view");
 const {
   setCensusDisplay,
 } = require("devtools/client/memory/actions/census-display");
 
-function run_test() {
-  run_next_test();
-}
-
 const EXPECTED_INDIVIDUAL_STATES = [
   individualsState.COMPUTING_DOMINATOR_TREE,
   individualsState.FETCHING,
   individualsState.FETCHED,
 ];
 
 add_task(function* () {
   let front = new StubbedMemoryFront();

--- a/devtools/client/memory/test/unit/test_individuals_06.js
+++ b/devtools/client/memory/test/unit/test_individuals_06.js
@@ -15,20 +15,16 @@ const {
   fetchIndividuals,
   takeSnapshotAndCensus,
   clearSnapshots,
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeView,
 } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 const EXPECTED_INDIVIDUAL_STATES = [
   individualsState.COMPUTING_DOMINATOR_TREE,
   individualsState.FETCHING,
   individualsState.FETCHED,
 ];
 
 add_task(function* () {
   let front = new StubbedMemoryFront();

--- a/devtools/client/memory/test/unit/test_pop_view_01.js
+++ b/devtools/client/memory/test/unit/test_pop_view_01.js
@@ -14,20 +14,16 @@ const {
   fetchIndividuals,
   takeSnapshotAndCensus,
 } = require("devtools/client/memory/actions/snapshot");
 const {
   changeView,
   popViewAndRefresh,
 } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 const TEST_STATES = [
   individualsState.COMPUTING_DOMINATOR_TREE,
   individualsState.FETCHING,
   individualsState.FETCHED,
 ];
 
 add_task(function* () {
   let front = new StubbedMemoryFront();

--- a/devtools/client/memory/test/unit/test_tree-map-01.js
+++ b/devtools/client/memory/test/unit/test_tree-map-01.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 
 "use strict";
 
 const { drawBox } = require("devtools/client/memory/components/tree-map/draw");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let fillRectValues, strokeRectValues;
   let ctx = {
     fillRect: (...args) => {
       fillRectValues = args;
     },
     strokeRect: (...args) => {
       strokeRectValues = args;

--- a/devtools/client/memory/test/unit/test_tree-map-02.js
+++ b/devtools/client/memory/test/unit/test_tree-map-02.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 
 "use strict";
 
 const { drawText } = require("devtools/client/memory/components/tree-map/draw");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   // Mock out the Canvas2dContext
   let ctx = {
     fillText: (...args) => fillTextValues.push(args),
     measureText: (text) => {
       let width = text ? text.length * 10 : 0;
       return { width };
     }

--- a/devtools/client/memory/test/unit/test_utils-get-snapshot-totals.js
+++ b/devtools/client/memory/test/unit/test_utils-get-snapshot-totals.js
@@ -9,20 +9,16 @@
  */
 
 const { censusDisplays, viewState, censusState } = require("devtools/client/memory/constants");
 const { getSnapshotTotals } = require("devtools/client/memory/utils");
 const { takeSnapshotAndCensus } = require("devtools/client/memory/actions/snapshot");
 const { setCensusDisplayAndRefresh } = require("devtools/client/memory/actions/census-display");
 const { changeView } = require("devtools/client/memory/actions/view");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let front = new StubbedMemoryFront();
   let heapWorker = new HeapAnalysesClient();
   yield front.attach();
   let store = Store();
   let { getState, dispatch } = store;
 
   dispatch(changeView(viewState.CENSUS));

--- a/devtools/client/memory/test/unit/test_utils.js
+++ b/devtools/client/memory/test/unit/test_utils.js
@@ -8,20 +8,16 @@
  * taking a snapshot, and its sub-actions. Tests the formatNumber and
  * formatPercent methods.
  */
 
 let utils = require("devtools/client/memory/utils");
 let { snapshotState: states, viewState } = require("devtools/client/memory/constants");
 let { Preferences } = require("resource://gre/modules/Preferences.jsm");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let s1 = utils.createSnapshot({ view: { state: viewState.CENSUS } });
   let s2 = utils.createSnapshot({ view: { state: viewState.CENSUS } });
   equal(s1.state, states.SAVING,
         "utils.createSnapshot() creates snapshot in saving state");
   ok(s1.id !== s2.id, "utils.createSnapshot() creates snapshot with unique ids");
 
   let custom = { by: "internalType", then: { by: "count", bytes: true }};

--- a/devtools/client/performance/test/unit/test_frame-utils-01.js
+++ b/devtools/client/performance/test/unit/test_frame-utils-01.js
@@ -37,20 +37,16 @@ const CHROME_LOCATIONS = [
   { location: "Startup::XRE_InitChildProcess", line: 456, column: 123 },
   { location: "chrome://browser/content/content.js", line: 456, column: 123 },
   "setTimeout_timer (resource://gre/foo.js:123:434)",
   "hello/<.world (jar:file://Users/mcurie/Dev/jetpacks.js)",
   "hello/<.world (resource://foo.js -> http://bar/baz.js:123:987)",
   "EnterJIT",
 ].map(argify);
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   const { computeIsContentAndCategory, parseLocation } = require("devtools/client/performance/modules/logic/frame-utils");
   let isContent = (frame) => {
     computeIsContentAndCategory(frame);
     return frame.isContent;
   };
 
   for (let frame of CONTENT_LOCATIONS) {

--- a/devtools/client/performance/test/unit/test_frame-utils-02.js
+++ b/devtools/client/performance/test/unit/test_frame-utils-02.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests the function testing whether or not a frame is content or chrome
  * works properly.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let FrameUtils = require("devtools/client/performance/modules/logic/frame-utils");
 
   let isContent = (frame) => {
     FrameUtils.computeIsContentAndCategory(frame);
     return frame.isContent;
   };
 

--- a/devtools/client/performance/test/unit/test_jit-graph-data.js
+++ b/devtools/client/performance/test/unit/test_jit-graph-data.js
@@ -1,20 +1,16 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Unit test for `createTierGraphDataFromFrameNode` function.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 const SAMPLE_COUNT = 1000;
 const RESOLUTION = 50;
 const TIME_PER_SAMPLE = 5;
 
 // Offset needed since ThreadNode requires the first sample to be strictly
 // greater than its start time. This lets us still have pretty numbers
 // in this test to keep it (more) simple, which it sorely needs.
 const TIME_OFFSET = 5;

--- a/devtools/client/performance/test/unit/test_jit-model-01.js
+++ b/devtools/client/performance/test/unit/test_jit-model-01.js
@@ -3,20 +3,16 @@
 "use strict";
 
 /**
  * Tests that JITOptimizations track optimization sites and create
  * an OptimizationSiteProfile when adding optimization sites, like from the
  * FrameNode, and the returning of that data is as expected.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let { JITOptimizations } = require("devtools/client/performance/modules/logic/jit");
 
   let rawSites = [];
   rawSites.push(gRawSite2);
   rawSites.push(gRawSite2);
   rawSites.push(gRawSite1);
   rawSites.push(gRawSite1);

--- a/devtools/client/performance/test/unit/test_jit-model-02.js
+++ b/devtools/client/performance/test/unit/test_jit-model-02.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests that JITOptimizations create OptimizationSites, and the underlying
  * hasSuccessfulOutcome/isSuccessfulOutcome work as intended.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let {
     JITOptimizations, hasSuccessfulOutcome, isSuccessfulOutcome, SUCCESSFUL_OUTCOMES
   } = require("devtools/client/performance/modules/logic/jit");
 
   let rawSites = [];
   rawSites.push(gRawSite2);
   rawSites.push(gRawSite2);

--- a/devtools/client/performance/test/unit/test_marker-blueprint.js
+++ b/devtools/client/performance/test/unit/test_marker-blueprint.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 /**
  * Tests if the timeline blueprint has a correct structure.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let { TIMELINE_BLUEPRINT } = require("devtools/client/performance/modules/markers");
 
   ok(TIMELINE_BLUEPRINT,
     "A timeline blueprint should be available.");
 
   ok(Object.keys(TIMELINE_BLUEPRINT).length,
     "The timeline blueprint has at least one entry.");

--- a/devtools/client/performance/test/unit/test_marker-utils.js
+++ b/devtools/client/performance/test/unit/test_marker-utils.js
@@ -1,20 +1,16 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests the marker utils methods.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let { TIMELINE_BLUEPRINT } = require("devtools/client/performance/modules/markers");
   let { PREFS } = require("devtools/client/performance/modules/global");
   let { MarkerBlueprintUtils } = require("devtools/client/performance/modules/marker-blueprint-utils");
 
   PREFS.registerObserver();
 
   Services.prefs.setBoolPref(PLATFORM_DATA_PREF, false);

--- a/devtools/client/performance/test/unit/test_perf-utils-allocations-to-samples.js
+++ b/devtools/client/performance/test/unit/test_perf-utils-allocations-to-samples.js
@@ -3,20 +3,16 @@
 "use strict";
 
 /**
  * Tests if allocations data received from the performance actor is properly
  * converted to something that follows the same structure as the samples data
  * received from the profiler.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   const { getProfileThreadFromAllocations } = require("devtools/shared/performance/recording-utils");
   let output = getProfileThreadFromAllocations(TEST_DATA);
   equal(output.toSource(), EXPECTED_OUTPUT.toSource(), "The output is correct.");
 });
 
 var TEST_DATA = {
   sites: [0, 0, 1, 2, 3],

--- a/devtools/client/performance/test/unit/test_profiler-categories.js
+++ b/devtools/client/performance/test/unit/test_profiler-categories.js
@@ -1,20 +1,16 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests if the profiler categories are mapped correctly.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let { CATEGORIES, CATEGORY_MAPPINGS } = require("devtools/client/performance/modules/categories");
   let { L10N } = require("devtools/client/performance/modules/global");
   let count = CATEGORIES.length;
 
   ok(count,
     "Should have a non-empty list of categories available.");
 

--- a/devtools/client/performance/test/unit/test_tree-model-01.js
+++ b/devtools/client/performance/test/unit/test_tree-model-01.js
@@ -1,20 +1,16 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests if a call tree model can be correctly computed from a samples array.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   const { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
 
   // Create a root node from a given samples array.
 
   let threadNode = new ThreadNode(gThread, { startTime: 0, endTime: 20 });
   let root = getFrameNodePath(threadNode, "(root)");
 

--- a/devtools/client/performance/test/unit/test_tree-model-02.js
+++ b/devtools/client/performance/test/unit/test_tree-model-02.js
@@ -1,20 +1,16 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests if a call tree model ignores samples with no timing information.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
 
   // Create a root node from a given samples array.
 
   let thread = new ThreadNode(gThread, { startTime: 0, endTime: 10 });
   let root = getFrameNodePath(thread, "(root)");
 

--- a/devtools/client/performance/test/unit/test_tree-model-03.js
+++ b/devtools/client/performance/test/unit/test_tree-model-03.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests if a call tree model can be correctly computed from a samples array,
  * while at the same time filtering by duration.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
 
   // Create a root node from a given samples array, filtering by time.
   //
   // Filtering from 5 to 18 includes the 2nd and 3rd samples. The 2nd sample
   // starts exactly on 5 and ends at 11. The 3rd sample starts at 11 and ends
   // exactly at 18.

--- a/devtools/client/performance/test/unit/test_tree-model-04.js
+++ b/devtools/client/performance/test/unit/test_tree-model-04.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests if a call tree model can be correctly computed from a samples array,
  * while at the same time filtering by duration and content-only frames.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
 
   // Create a root node from a given samples array, filtering by time.
 
   let startTime = 5;
   let endTime = 18;
   let thread = new ThreadNode(gThread, { startTime, endTime, contentOnly: true });

--- a/devtools/client/performance/test/unit/test_tree-model-05.js
+++ b/devtools/client/performance/test/unit/test_tree-model-05.js
@@ -38,20 +38,16 @@ var gThread = synthesizeProfileForTest([
   frames: [
     { location: "(root)" },
     { location: "A" },
     { location: "B" },
     { location: "F" }
   ]
 }]);
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
 
   let root = new ThreadNode(gThread, { invertTree: true, startTime: 0, endTime: 4 });
 
   equal(root.calls.length, 2,
      "Should get the 2 youngest frames, not the 1 oldest frame");
 

--- a/devtools/client/performance/test/unit/test_tree-model-06.js
+++ b/devtools/client/performance/test/unit/test_tree-model-06.js
@@ -3,20 +3,16 @@
 "use strict";
 
 /**
  * Tests that when constructing FrameNodes, if optimization data is available,
  * the FrameNodes have the correct optimization data after iterating over samples,
  * and only youngest frames capture optimization data.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
   let root = getFrameNodePath(new ThreadNode(gThread, { startTime: 0,
                                                         endTime: 30 }), "(root)");
 
   let A = getFrameNodePath(root, "A");
   let B = getFrameNodePath(A, "B");
   let C = getFrameNodePath(B, "C");

--- a/devtools/client/performance/test/unit/test_tree-model-07.js
+++ b/devtools/client/performance/test/unit/test_tree-model-07.js
@@ -3,20 +3,16 @@
 "use strict";
 
 /**
  * Tests that when displaying only content nodes, platform nodes are generalized.
  */
 
 var { CATEGORY_MASK } = require("devtools/client/performance/modules/categories");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
   let url = (n) => `http://content/${n}`;
 
   // Create a root node from a given samples array.
 
   let root = getFrameNodePath(new ThreadNode(gThread, { startTime: 5, endTime: 30,
                                                         contentOnly: true }), "(root)");

--- a/devtools/client/performance/test/unit/test_tree-model-08.js
+++ b/devtools/client/performance/test/unit/test_tree-model-08.js
@@ -1,20 +1,16 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Verifies if FrameNodes retain and parse their data appropriately.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let FrameUtils = require("devtools/client/performance/modules/logic/frame-utils");
   let { FrameNode } = require("devtools/client/performance/modules/logic/tree-model");
   let { CATEGORY_MASK } = require("devtools/client/performance/modules/categories");
   let compute = frame => {
     FrameUtils.computeIsContentAndCategory(frame);
     return frame;
   };

--- a/devtools/client/performance/test/unit/test_tree-model-09.js
+++ b/devtools/client/performance/test/unit/test_tree-model-09.js
@@ -1,20 +1,16 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests that when displaying only content nodes, platform nodes are generalized.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
   let url = (n) => `http://content/${n}`;
 
   // Create a root node from a given samples array.
 
   let root = getFrameNodePath(new ThreadNode(gThread, { startTime: 5, endTime: 25,
                                                         contentOnly: true }), "(root)");

--- a/devtools/client/performance/test/unit/test_tree-model-10.js
+++ b/devtools/client/performance/test/unit/test_tree-model-10.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests that the tree model calculates correct costs/percentages for
  * frame nodes. The model-only version of browser_profiler-tree-view-10.js
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
   let thread = new ThreadNode(gThread, { invertTree: true, startTime: 0, endTime: 50 });
 
   /**
    * Samples
    *
    * A->C

--- a/devtools/client/performance/test/unit/test_tree-model-11.js
+++ b/devtools/client/performance/test/unit/test_tree-model-11.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests that the costs for recursive frames does not overcount the collapsed
  * samples.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
   let thread = new ThreadNode(gThread, { startTime: 0, endTime: 50,
                                          flattenRecursion: true });
 
   /**
    * Samples
    *

--- a/devtools/client/performance/test/unit/test_tree-model-12.js
+++ b/devtools/client/performance/test/unit/test_tree-model-12.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that uninverting the call tree works correctly when there are stacks
 // in the profile that prefixes of other stacks.
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
   let thread = new ThreadNode(gThread, { startTime: 0, endTime: 50 });
   let root = getFrameNodePath(thread, "(root)");
 
   /**
    * Samples
    *

--- a/devtools/client/performance/test/unit/test_tree-model-13.js
+++ b/devtools/client/performance/test/unit/test_tree-model-13.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Like test_tree-model-12, but inverted.
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
   let root = new ThreadNode(gThread, { invertTree: true, startTime: 0, endTime: 50 });
 
   /**
    * Samples
    *
    * A->B

--- a/devtools/client/performance/test/unit/test_tree-model-allocations-01.js
+++ b/devtools/client/performance/test/unit/test_tree-model-allocations-01.js
@@ -1,20 +1,16 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 /**
  * Tests that the tree model calculates correct costs/percentages for
  * allocation frame nodes.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
   const { getProfileThreadFromAllocations } = require("devtools/shared/performance/recording-utils");
   let allocationData = getProfileThreadFromAllocations(TEST_DATA);
   let thread = new ThreadNode(allocationData, { startTime: 0, endTime: 1000 });
 
   /* eslint-disable max-len */
   /**

--- a/devtools/client/performance/test/unit/test_tree-model-allocations-02.js
+++ b/devtools/client/performance/test/unit/test_tree-model-allocations-02.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests that the tree model calculates correct costs/percentages for
  * allocation frame nodes. Inverted version of test_tree-model-allocations-01.js
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function () {
   let { ThreadNode } = require("devtools/client/performance/modules/logic/tree-model");
   const { getProfileThreadFromAllocations } = require("devtools/shared/performance/recording-utils");
   let allocationData = getProfileThreadFromAllocations(TEST_DATA);
   let thread = new ThreadNode(allocationData, { invertTree: true, startTime: 0,
                                                 endTime: 1000 });
 
   /* eslint-disable max-len */

--- a/devtools/client/performance/test/unit/test_waterfall-utils-collapse-01.js
+++ b/devtools/client/performance/test/unit/test_waterfall-utils-collapse-01.js
@@ -1,20 +1,16 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests if the waterfall collapsing logic works properly.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   const WaterfallUtils = require("devtools/client/performance/modules/logic/waterfall-utils");
 
   let rootMarkerNode = WaterfallUtils.createParentNode({ name: "(root)" });
 
   WaterfallUtils.collapseMarkersIntoNode({
     rootNode: rootMarkerNode,
     markersList: gTestMarkers

--- a/devtools/client/performance/test/unit/test_waterfall-utils-collapse-02.js
+++ b/devtools/client/performance/test/unit/test_waterfall-utils-collapse-02.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests if the waterfall collapsing logic works properly for console.time/console.timeEnd
  * markers, as they should ignore any sort of collapsing.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   const WaterfallUtils = require("devtools/client/performance/modules/logic/waterfall-utils");
 
   let rootMarkerNode = WaterfallUtils.createParentNode({ name: "(root)" });
 
   WaterfallUtils.collapseMarkersIntoNode({
     rootNode: rootMarkerNode,
     markersList: gTestMarkers

--- a/devtools/client/performance/test/unit/test_waterfall-utils-collapse-03.js
+++ b/devtools/client/performance/test/unit/test_waterfall-utils-collapse-03.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests that the waterfall collapsing works when atleast two
  * collapsible markers downward, and the following marker is outside of both ranges.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   const WaterfallUtils = require("devtools/client/performance/modules/logic/waterfall-utils");
 
   let rootMarkerNode = WaterfallUtils.createParentNode({ name: "(root)" });
 
   WaterfallUtils.collapseMarkersIntoNode({
     rootNode: rootMarkerNode,
     markersList: gTestMarkers

--- a/devtools/client/performance/test/unit/test_waterfall-utils-collapse-04.js
+++ b/devtools/client/performance/test/unit/test_waterfall-utils-collapse-04.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests if the waterfall collapsing logic works properly
  * when filtering parents and children.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   const WaterfallUtils = require("devtools/client/performance/modules/logic/waterfall-utils");
 
   [
     [["DOMEvent"], gExpectedOutputNoDOMEvent],
     [["Javascript"], gExpectedOutputNoJS],
     [["DOMEvent", "Javascript"], gExpectedOutputNoDOMEventOrJS],
   ].forEach(([filter, expected]) => {

--- a/devtools/client/performance/test/unit/test_waterfall-utils-collapse-05.js
+++ b/devtools/client/performance/test/unit/test_waterfall-utils-collapse-05.js
@@ -2,20 +2,16 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 /**
  * Tests if the waterfall collapsing logic works properly
  * when dealing with OTMT markers.
  */
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function test() {
   const WaterfallUtils = require("devtools/client/performance/modules/logic/waterfall-utils");
 
   let rootMarkerNode = WaterfallUtils.createParentNode({ name: "(root)" });
 
   WaterfallUtils.collapseMarkersIntoNode({
     rootNode: rootMarkerNode,
     markersList: gTestMarkers

--- a/devtools/client/shared/test/unit/test_source-utils.js
+++ b/devtools/client/shared/test/unit/test_source-utils.js
@@ -5,20 +5,16 @@
 
 /**
  * Tests utility functions contained in `source-utils.js`
  */
 
 const { require } = Components.utils.import("resource://devtools/shared/Loader.jsm", {});
 const sourceUtils = require("devtools/client/shared/source-utils");
 
-function run_test() {
-  run_next_test();
-}
-
 const CHROME_URLS = [
   "chrome://foo", "resource://baz", "jar:file:///Users/root"
 ];
 
 const CONTENT_URLS = [
   "http://mozilla.org", "https://mozilla.org", "file:///Users/root", "app://fxosapp",
   "blob:http://mozilla.org", "blob:https://mozilla.org"
 ];

--- a/devtools/server/tests/unit/test_profiler_events-01.js
+++ b/devtools/server/tests/unit/test_profiler_events-01.js
@@ -4,20 +4,16 @@
 "use strict";
 
 /**
  * Tests the event notification service for the profiler actor.
  */
 
 const { ProfilerFront } = require("devtools/shared/fronts/profiler");
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let [client, form] = yield getChromeActors();
   let front = new ProfilerFront(client, form);
 
   let events = [0, 0, 0, 0];
   front.on("console-api-profiler", () => events[0]++);
   front.on("profiler-started", () => events[1]++);
   front.on("profiler-stopped", () => events[2]++);

--- a/devtools/server/tests/unit/test_profiler_events-02.js
+++ b/devtools/server/tests/unit/test_profiler_events-02.js
@@ -7,20 +7,16 @@
  * Tests the event notification service for the profiler actor.
  */
 
 const Profiler = Cc["@mozilla.org/tools/profiler;1"].getService(Ci.nsIProfiler);
 const MAX_PROFILER_ENTRIES = 10000000;
 const { ProfilerFront } = require("devtools/shared/fronts/profiler");
 const { waitForTime } = DevToolsUtils;
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   let [client, form] = yield getChromeActors();
   let front = new ProfilerFront(client, form);
 
   // Ensure the profiler is not running when the test starts (it could
   // happen if the MOZ_PROFILER_STARTUP environment variable is set).
   Profiler.StopProfiler();
   let eventsCalled = 0;

--- a/devtools/shared/discovery/tests/unit/test_discovery.js
+++ b/devtools/shared/discovery/tests/unit/test_discovery.js
@@ -71,20 +71,16 @@ discovery._factories.Transport = TestTra
 
 // Ignore name generation on b2g and force a fixed value
 Object.defineProperty(discovery.device, "name", {
   get: function () {
     return "test-device";
   }
 });
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   // At startup, no remote devices are known
   deepEqual(discovery.getRemoteDevicesWithService("devtools"), []);
   deepEqual(discovery.getRemoteDevicesWithService("penguins"), []);
 
   discovery.scan();
 
   // No services added yet, still empty

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_computeDominatorTree_01.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_computeDominatorTree_01.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test the HeapAnalyses{Client,Worker} "computeDominatorTree" request.
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   const client = new HeapAnalysesClient();
 
   const snapshotFilePath = saveNewHeapSnapshot();
   yield client.readHeapSnapshot(snapshotFilePath);
   ok(true, "Should have read the heap snapshot");
 
   const dominatorTreeId = yield client.computeDominatorTree(snapshotFilePath);

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_computeDominatorTree_02.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_computeDominatorTree_02.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test the HeapAnalyses{Client,Worker} "computeDominatorTree" request with bad
 // file paths.
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   const client = new HeapAnalysesClient();
 
   let threw = false;
   try {
     yield client.computeDominatorTree("/etc/passwd");
   } catch (_) {
     threw = true;

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_01.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_01.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can delete heap snapshots.
 
-function run_test() {
-  run_next_test();
-}
-
 const breakdown = {
   by: "coarseType",
   objects: { by: "count", count: true, bytes: true },
   scripts: { by: "count", count: true, bytes: true },
   strings: { by: "count", count: true, bytes: true },
   other: { by: "count", count: true, bytes: true },
 };
 

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_02.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_02.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test deleteHeapSnapshot is a noop if the provided path matches no snapshot
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   const client = new HeapAnalysesClient();
 
   let threw = false;
   try {
     yield client.deleteHeapSnapshot("path-does-not-exist");
   } catch (_) {
     threw = true;

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_03.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_03.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test other dominatorTrees can still be retrieved after deleting a snapshot
 
-function run_test() {
-  run_next_test();
-}
-
 const breakdown = {
   by: "coarseType",
   objects: { by: "count", count: true, bytes: true },
   scripts: { by: "count", count: true, bytes: true },
   strings: { by: "count", count: true, bytes: true },
   other: { by: "count", count: true, bytes: true },
 };
 

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getCensusIndividuals_01.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getCensusIndividuals_01.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can get census individuals.
 
-function run_test() {
-  run_next_test();
-}
-
 const COUNT = { by: "count", count: true, bytes: true };
 
 const CENSUS_BREAKDOWN = {
   by: "coarseType",
   objects: COUNT,
   strings: COUNT,
   scripts: COUNT,
   other: COUNT,

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getCreationTime_01.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getCreationTime_01.js
@@ -7,20 +7,16 @@
 
 function waitForThirtyMilliseconds() {
   const start = Date.now();
   while (Date.now() - start < 30) {
     // do nothing
   }
 }
 
-function run_test() {
-  run_next_test();
-}
-
 const BREAKDOWN = {
   by: "internalType",
   then: { by: "count", count: true, bytes: true }
 };
 
 add_task(function* () {
   const client = new HeapAnalysesClient();
   const start = Date.now() * 1000;

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getDominatorTree_01.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getDominatorTree_01.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test the HeapAnalyses{Client,Worker} "getDominatorTree" request.
 
-function run_test() {
-  run_next_test();
-}
-
 const breakdown = {
   by: "coarseType",
   objects: { by: "count", count: true, bytes: true },
   scripts: { by: "count", count: true, bytes: true },
   strings: { by: "count", count: true, bytes: true },
   other: { by: "count", count: true, bytes: true },
 };
 

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getDominatorTree_02.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getDominatorTree_02.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test the HeapAnalyses{Client,Worker} "getDominatorTree" request with bad
 // dominator tree ids.
 
-function run_test() {
-  run_next_test();
-}
-
 const breakdown = {
   by: "coarseType",
   objects: { by: "count", count: true, bytes: true },
   scripts: { by: "count", count: true, bytes: true },
   strings: { by: "count", count: true, bytes: true },
   other: { by: "count", count: true, bytes: true },
 };
 

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getImmediatelyDominated_01.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_getImmediatelyDominated_01.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test the HeapAnalyses{Client,Worker} "getImmediatelyDominated" request.
 
-function run_test() {
-  run_next_test();
-}
-
 const breakdown = {
   by: "coarseType",
   objects: { by: "count", count: true, bytes: true },
   scripts: { by: "count", count: true, bytes: true },
   strings: { by: "count", count: true, bytes: true },
   other: { by: "count", count: true, bytes: true },
 };
 

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_readHeapSnapshot_01.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_readHeapSnapshot_01.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can read heap snapshots.
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   const client = new HeapAnalysesClient();
 
   const snapshotFilePath = saveNewHeapSnapshot();
   yield client.readHeapSnapshot(snapshotFilePath);
   ok(true, "Should have read the heap snapshot");
 
   client.destroy();

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensusDiff_01.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensusDiff_01.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can take diffs between censuses.
 
-function run_test() {
-  run_next_test();
-}
-
 const BREAKDOWN = {
   by: "objectClass",
   then: { by: "count", count: true, bytes: false },
   other: { by: "count", count: true, bytes: false },
 };
 
 add_task(function* () {
   const client = new HeapAnalysesClient();

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensusDiff_02.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensusDiff_02.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can take diffs between censuses as
 // inverted trees.
 
-function run_test() {
-  run_next_test();
-}
-
 const BREAKDOWN = {
   by: "coarseType",
   objects: {
     by: "objectClass",
     then: { by: "count", count: true, bytes: true },
     other: { by: "count", count: true, bytes: true },
   },
   scripts: {

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_01.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_01.js
@@ -1,18 +1,14 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can take censuses.
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   const client = new HeapAnalysesClient();
 
   const snapshotFilePath = saveNewHeapSnapshot();
   yield client.readHeapSnapshot(snapshotFilePath);
   ok(true, "Should have read the heap snapshot");
 
   const { report } = yield client.takeCensus(snapshotFilePath);

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_02.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_02.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can take censuses with breakdown
 // options.
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   const client = new HeapAnalysesClient();
 
   const snapshotFilePath = saveNewHeapSnapshot();
   yield client.readHeapSnapshot(snapshotFilePath);
   ok(true, "Should have read the heap snapshot");
 
   const { report } = yield client.takeCensus(snapshotFilePath, {

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_03.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_03.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} bubbles errors properly when things
 // go wrong.
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* () {
   const client = new HeapAnalysesClient();
 
   // Snapshot file path to a file that doesn't exist.
   let failed = false;
   try {
     yield client.readHeapSnapshot(getFilePath("foo-bar-baz" + Math.random(), true));
   } catch (e) {

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_04.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_04.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can send SavedFrame stacks from
 // by-allocation-stack reports from the worker.
 
-function run_test() {
-  run_next_test();
-}
-
 add_task(function* test() {
   const client = new HeapAnalysesClient();
 
   // Track some allocation stacks.
 
   const g = newGlobal();
   const dbg = new Debugger(g);
   g.eval(`                                                   // 1

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_05.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_05.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can take censuses and return
 // a CensusTreeNode.
 
-function run_test() {
-  run_next_test();
-}
-
 const BREAKDOWN = {
   by: "internalType",
   then: { by: "count", count: true, bytes: true }
 };
 
 add_task(function* () {
   const client = new HeapAnalysesClient();
 

--- a/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_06.js
+++ b/devtools/shared/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_06.js
@@ -1,19 +1,15 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
 // Test that the HeapAnalyses{Client,Worker} can take censuses by
 // "allocationStack" and return a CensusTreeNode.
 
-function run_test() {
-  run_next_test();
-}
-
 const BREAKDOWN = {
   by: "objectClass",
   then: {
     by: "allocationStack",
     then: { by: "count", count: true, bytes: true },
     noStack: { by: "count", count: true, bytes: true }
   },
   other: { by: "count", count: true, bytes: true }