--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -1518,17 +1518,16 @@ pref("dom.ipc.processHangMonitor", true)
 #ifdef DEBUG
 // Don't report hangs in DEBUG builds. They're too slow and often a
 // debugger is attached.
 pref("dom.ipc.reportProcessHangs", false);
 #else
 pref("dom.ipc.reportProcessHangs", true);
 #endif
 
-pref("browser.reader.detectedFirstArticle", false);
 // Don't limit how many nodes we care about on desktop:
 pref("reader.parse-node-limit", 0);
 
 // On desktop, we want the URLs to be included here for ease of debugging,
 // and because (normally) these errors are not persisted anywhere.
 pref("reader.errors.includeURLs", true);
 
 pref("view_source.tab", true);

--- a/browser/base/content/test/static/browser_all_files_referenced.js
+++ b/browser/base/content/test/static/browser_all_files_referenced.js
@@ -31,20 +31,16 @@ if (AppConstants.platform == "macosx")
 var whitelist = new Set([
   // browser/extensions/pdfjs/content/PdfStreamConverter.jsm
   {file: "chrome://pdf.js/locale/chrome.properties"},
   {file: "chrome://pdf.js/locale/viewer.properties"},
 
   // security/manager/pki/resources/content/device_manager.js
   {file: "chrome://pippki/content/load_device.xul"},
 
-  // browser/modules/ReaderParent.jsm
-  {file: "chrome://browser/skin/reader-tour.png"},
-  {file: "chrome://browser/skin/reader-tour@2x.png"},
-
   // Used by setting this url as a pref in about:config
   {file: "chrome://browser/content/newtab/alternativeDefaultSites.json"},
 
   // Add-on compat
   {file: "chrome://browser/skin/devtools/common.css"},
   {file: "chrome://global/content/XPCNativeWrapper.js"},
   {file: "chrome://global/locale/brand.dtd"},
 

--- a/browser/locales/en-US/chrome/browser/browser.properties
+++ b/browser/locales/en-US/chrome/browser/browser.properties
@@ -758,21 +758,16 @@ flashHang.helpButton.accesskey = L
 # be replaced with a hyperlink containing the text defined in customizeTips.tip0.learnMore.
 customizeTips.tip0 = %1$S: You can customize %2$S to work the way you do. Simply drag any of the above to the menu or toolbar. %3$S about customizing %2$S.
 customizeTips.tip0.hint = Hint
 customizeTips.tip0.learnMore = Learn more
 
 # LOCALIZATION NOTE (customizeMode.tabTitle): %S is brandShortName
 customizeMode.tabTitle = Customize %S
 
-# LOCALIZATION NOTE : FILE Reader View is a feature name and therefore typically used as a proper noun.
-
-readingList.promo.firstUse.readerView.title = Reader View
-readingList.promo.firstUse.readerView.body = Remove clutter so you can focus exactly on what you want to read.
-
 # LOCALIZATION NOTE (appMenuRemoteTabs.mobilePromo.text2):
 # %1$S will be replaced with a link, the text of which is
 # appMenuRemoteTabs.mobilePromo.android and the link will be to
 # https://www.mozilla.org/firefox/android/.
 # %2$S will be replaced with a link, the text of which is
 # appMenuRemoteTabs.mobilePromo.ios
 # and the link will be to https://www.mozilla.org/firefox/ios/.
 appMenuRemoteTabs.mobilePromo.text2 = Download %1$S or %2$S and connect them to your Firefox Account.

--- a/browser/modules/ReaderParent.jsm
+++ b/browser/modules/ReaderParent.jsm
@@ -15,18 +15,16 @@ Cu.import("resource://gre/modules/Task.j
 
 XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils", "resource://gre/modules/PlacesUtils.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "ReaderMode", "resource://gre/modules/ReaderMode.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "UITour", "resource:///modules/UITour.jsm");
 
 const gStringBundle = Services.strings.createBundle("chrome://global/locale/aboutReader.properties");
 
 var ReaderParent = {
-  _readerModeInfoPanelOpen: false,
-
   MESSAGES: [
     "Reader:ArticleGet",
     "Reader:FaviconRequest",
     "Reader:UpdateReaderButton",
   ],
 
   init() {
     let mm = Cc["@mozilla.org/globalmessagemanager;1"].getService(Ci.nsIMessageListenerManager);
@@ -103,30 +101,16 @@ var ReaderParent = {
       button.hidden = !browser.isArticle;
       let enterText = gStringBundle.GetStringFromName("readerView.enter");
       button.setAttribute("tooltiptext", enterText);
       command.setAttribute("label", enterText);
       command.setAttribute("hidden", !browser.isArticle);
       command.setAttribute("accesskey", gStringBundle.GetStringFromName("readerView.enter.accesskey"));
       key.setAttribute("disabled", !browser.isArticle);
     }
-
-    let currentUriHost = browser.currentURI && browser.currentURI.asciiHost;
-    if (browser.isArticle &&
-        !Services.prefs.getBoolPref("browser.reader.detectedFirstArticle") &&
-        currentUriHost && !currentUriHost.endsWith("mozilla.org")) {
-      this.showReaderModeInfoPanel(browser);
-      Services.prefs.setBoolPref("browser.reader.detectedFirstArticle", true);
-      this._readerModeInfoPanelOpen = true;
-    } else if (this._readerModeInfoPanelOpen) {
-      if (UITour.isInfoOnTarget(win, "readerMode-urlBar")) {
-        UITour.hideInfo(win);
-      }
-      this._readerModeInfoPanelOpen = false;
-    }
   },
 
   forceShowReaderIcon(browser) {
     browser.isArticle = true;
     this.updateReaderButton(browser);
   },
 
   buttonClick(event) {
@@ -138,39 +122,16 @@ var ReaderParent = {
 
   toggleReaderMode(event) {
     let win = event.target.ownerGlobal;
     let browser = win.gBrowser.selectedBrowser;
     browser.messageManager.sendAsyncMessage("Reader:ToggleReaderMode");
   },
 
   /**
-   * Shows an info panel from the UITour for Reader Mode.
-   *
-   * @param browser The <browser> that the tour should be started for.
-   */
-  showReaderModeInfoPanel(browser) {
-    let win = browser.ownerGlobal;
-    let targetPromise = UITour.getTarget(win, "readerMode-urlBar");
-    targetPromise.then(target => {
-      let browserBundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
-      let icon = "chrome://browser/skin/";
-      if (win.devicePixelRatio > 1) {
-        icon += "reader-tour@2x.png";
-      } else {
-        icon += "reader-tour.png";
-      }
-      UITour.showInfo(win, target,
-                      browserBundle.GetStringFromName("readingList.promo.firstUse.readerView.title"),
-                      browserBundle.GetStringFromName("readingList.promo.firstUse.readerView.body"),
-                      icon);
-    });
-  },
-
-  /**
    * Gets an article for a given URL. This method will download and parse a document.
    *
    * @param url The article URL.
    * @param browser The browser where the article is currently loaded.
    * @return {Promise}
    * @resolves JS object representing the article, or null if no article is found.
    */
   _getArticle: Task.async(function* (url, browser) {

--- a/browser/themes/shared/jar.inc.mn
+++ b/browser/themes/shared/jar.inc.mn
@@ -120,18 +120,16 @@
   skin/classic/browser/warning-white.svg                       (../shared/warning-white.svg)
   skin/classic/browser/cert-error.svg                          (../shared/incontent-icons/cert-error.svg)
   skin/classic/browser/wifi.svg                                (../shared/incontent-icons/wifi.svg)
   skin/classic/browser/session-restore.svg                     (../shared/incontent-icons/session-restore.svg)
   skin/classic/browser/tab-crashed.svg                         (../shared/incontent-icons/tab-crashed.svg)
   skin/classic/browser/favicon-search-16.svg                   (../shared/favicon-search-16.svg)
   skin/classic/browser/icon-search-64.svg                      (../shared/incontent-icons/icon-search-64.svg)
   skin/classic/browser/welcome-back.svg                        (../shared/incontent-icons/welcome-back.svg)
-  skin/classic/browser/reader-tour.png                         (../shared/reader/reader-tour.png)
-  skin/classic/browser/reader-tour@2x.png                      (../shared/reader/reader-tour@2x.png)
   skin/classic/browser/readerMode.svg                          (../shared/reader/readerMode.svg)
   skin/classic/browser/panic-panel/header.png                  (../shared/panic-panel/header.png)
   skin/classic/browser/panic-panel/header@2x.png               (../shared/panic-panel/header@2x.png)
   skin/classic/browser/panic-panel/header-small.png            (../shared/panic-panel/header-small.png)
   skin/classic/browser/panic-panel/header-small@2x.png         (../shared/panic-panel/header-small@2x.png)
   skin/classic/browser/panic-panel/icons.png                   (../shared/panic-panel/icons.png)
   skin/classic/browser/panic-panel/icons@2x.png                (../shared/panic-panel/icons@2x.png)
   skin/classic/browser/privatebrowsing/aboutPrivateBrowsing.css (../shared/privatebrowsing/aboutPrivateBrowsing.css)

deleted file mode 100644
index be346b3847928f94d7a0bbca019f40d86edd0899..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

deleted file mode 100644
index 1a60d93ca9311f8bf9e0ce3f6f175370a69f648e..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

--- a/testing/marionette/client/marionette_driver/geckoinstance.py
+++ b/testing/marionette/client/marionette_driver/geckoinstance.py
@@ -426,19 +426,16 @@ class DesktopInstance(GeckoInstance):
         # Assume the about:newtab page"s intro panels have been shown to not depend on
         # which test runs first and happens to open about:newtab
         "browser.newtabpage.introShown": True,
 
         # Background thumbnails in particular cause grief, and disabling thumbnails
         # in general can"t hurt - we re-enable them when tests need them
         "browser.pagethumbnails.capturing_disabled": True,
 
-        # Avoid performing Reader Mode intros during tests
-        "browser.reader.detectedFirstArticle": True,
-
         # Disable safebrowsing components
         "browser.safebrowsing.blockedURIs.enabled": False,
         "browser.safebrowsing.downloads.enabled": False,
         "browser.safebrowsing.forbiddenURIs.enabled": False,
         "browser.safebrowsing.malware.enabled": False,
         "browser.safebrowsing.phishing.enabled": False,
 
         # Disable updates to search engines

--- a/testing/marionette/server.js
+++ b/testing/marionette/server.js
@@ -89,19 +89,16 @@ const RECOMMENDED_PREFS = new Map([
   // This should also be set in the profile prior to starting Firefox,
   // as it is picked up at runtime.
   ["browser.offline", false],
 
   // Background thumbnails in particular cause grief, and disabling
   // thumbnails in general cannot hurt
   ["browser.pagethumbnails.capturing_disabled", true],
 
-  // Avoid performing Reader Mode intros during tests
-  ["browser.reader.detectedFirstArticle", true],
-
   // Disable safebrowsing components.
   //
   // These should also be set in the profile prior to starting Firefox,
   // as it is picked up at runtime.
   ["browser.safebrowsing.blockedURIs.enabled", false],
   ["browser.safebrowsing.downloads.enabled", false],
   ["browser.safebrowsing.enabled", false],
   ["browser.safebrowsing.forbiddenURIs.enabled", false],

--- a/testing/profiles/prefs_general.js
+++ b/testing/profiles/prefs_general.js
@@ -318,19 +318,16 @@ user_pref("browser.tabs.remote.autostart
 // Don't show a delay when hiding the audio indicator during tests
 user_pref("browser.tabs.delayHidingAudioPlayingIconMS", 0);
 // Don't forceably kill content processes after a timeout
 user_pref("dom.ipc.tabs.shutdownTimeoutSecs", 0);
 
 // Don't block add-ons for e10s
 user_pref("extensions.e10sBlocksEnabling", false);
 
-// Avoid performing Reader Mode intros during tests.
-user_pref("browser.reader.detectedFirstArticle", true);
-
 // Make tests run consistently on DevEdition (which has a lightweight theme
 // selected by default).
 user_pref("lightweightThemes.selectedThemeID", "");
 
 // Enable speech synth test service, and disable built in platform services.
 user_pref("media.webspeech.synth.test", true);
 
 // Turn off search suggestions in the location bar so as not to trigger network

--- a/toolkit/components/reader/test/browser_readerMode.js
+++ b/toolkit/components/reader/test/browser_readerMode.js
@@ -24,44 +24,33 @@ add_task(function* test_reader_button() 
       gBrowser.removeCurrentTab();
     }
   });
 
   // Set required test prefs.
   TEST_PREFS.forEach(([name, value]) => {
     Services.prefs.setBoolPref(name, value);
   });
-  Services.prefs.setBoolPref("browser.reader.detectedFirstArticle", false);
 
   let tab = gBrowser.selectedTab = gBrowser.addTab();
   is_element_hidden(readerButton, "Reader mode button is not present on a new tab");
   ok(!UITour.isInfoOnTarget(window, "readerMode-urlBar"),
      "Info panel shouldn't appear without the reader mode button");
-  ok(!Services.prefs.getBoolPref("browser.reader.detectedFirstArticle"),
-     "Shouldn't have detected the first article");
 
-  // We're going to show the reader mode intro popup, make sure we wait for it:
-  let tourPopupShownPromise =
-    BrowserTestUtils.waitForEvent(document.getElementById("UITourTooltip"), "popupshown");
   // Point tab to a test page that is reader-able.
   let url = TEST_PATH + "readerModeArticle.html";
   yield promiseTabLoadEvent(tab, url);
   yield promiseWaitForCondition(() => !readerButton.hidden);
-  yield tourPopupShownPromise;
+
   is_element_visible(readerButton, "Reader mode button is present on a reader-able page");
-  ok(UITour.isInfoOnTarget(window, "readerMode-urlBar"),
-     "Info panel should be anchored at the reader mode button");
-  ok(Services.prefs.getBoolPref("browser.reader.detectedFirstArticle"),
-     "Should have detected the first article");
 
   // Switch page into reader mode.
   let promiseTabLoad = promiseTabLoadEvent(tab);
   readerButton.click();
   yield promiseTabLoad;
-  ok(!UITour.isInfoOnTarget(window, "readerMode-urlBar"), "Info panel should have closed");
 
   let readerUrl = gBrowser.selectedBrowser.currentURI.spec;
   ok(readerUrl.startsWith("about:reader"), "about:reader loaded after clicking reader mode button");
   is_element_visible(readerButton, "Reader mode button is present on about:reader");
 
   is(gURLBar.value, readerUrl, "gURLBar value is about:reader URL");
   is(gURLBar.textValue, url.substring("http://".length), "gURLBar is displaying original article URL");
 

--- a/toolkit/components/reader/test/browser_readerMode_hidden_nodes.js
+++ b/toolkit/components/reader/test/browser_readerMode_hidden_nodes.js
@@ -3,17 +3,16 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 /**
  * Test that the reader mode button appears and works properly on
  * reader-able content.
  */
 const TEST_PREFS = [
   ["reader.parse-on-load.enabled", true],
-  ["browser.reader.detectedFirstArticle", false],
 ];
 
 const TEST_PATH = getRootDirectory(gTestPath).replace("chrome://mochitests/content", "http://example.com");
 
 var readerButton = document.getElementById("reader-mode-button");
 
 add_task(function* test_reader_button() {
   registerCleanupFunction(function() {