--- a/layout/base/PositionedEventTargeting.cpp
+++ b/layout/base/PositionedEventTargeting.cpp
@@ -122,23 +122,21 @@ GetPrefsFor(EventClassID aEventClassID)
           "ui.mouse.radius.inputSource.touchOnly", true);
     } else {
       prefs->mTouchOnly = false;
     }
 
     nsPrintfCString repositionPref("ui.%s.radius.reposition", prefBranch);
     Preferences::AddBoolVarCache(&prefs->mRepositionEventCoords, repositionPref.get(), false);
 
-    Preferences::AddBoolVarCache(&prefs->mTouchClusterDetectionEnabled, "ui.zoomedview.enabled", false);
-
-    Preferences::AddBoolVarCache(&prefs->mSimplifiedClusterDetection, "ui.zoomedview.simplified", false);
-
-    Preferences::AddUintVarCache(&prefs->mLimitReadableSize, "ui.zoomedview.limitReadableSize", 8);
-
-    Preferences::AddUintVarCache(&prefs->mKeepLimitSizeForCluster, "ui.zoomedview.keepLimitSize", 16);
+    // These values were formerly set by ui.zoomedview preferences.
+    prefs->mTouchClusterDetectionEnabled = false;
+    prefs->mSimplifiedClusterDetection = false;
+    prefs->mLimitReadableSize = 8;
+    prefs->mKeepLimitSizeForCluster = 16;
   }
 
   return prefs;
 }
 
 static bool
 HasMouseListener(nsIContent* aContent)
 {

--- a/mobile/android/app/mobile.js
+++ b/mobile/android/app/mobile.js
@@ -413,26 +413,20 @@ pref("devtools.remote.wifi.enabled", fal
 pref("font.size.inflation.minTwips", 0);
 
 // When true, zooming will be enabled on all sites, even ones that declare user-scalable=no.
 pref("browser.ui.zoom.force-user-scalable", false);
 
 // When removing this Nightly flag, also remember to remove the flags surrounding this feature
 // in GeckoPreferences and BrowserApp (see bug 1245930).
 #ifdef NIGHTLY_BUILD
-pref("ui.zoomedview.enabled", true);
 pref("ui.bookmark.mobilefolder.enabled", true);
 #else
-pref("ui.zoomedview.enabled", false);
 pref("ui.bookmark.mobilefolder.enabled", false);
 #endif
-pref("ui.zoomedview.keepLimitSize", 16); // value in layer pixels, used to not keep the large elements in the cluster list (Bug 1191041)
-pref("ui.zoomedview.limitReadableSize", 8); // value in layer pixels
-pref("ui.zoomedview.defaultZoomFactor", 2);
-pref("ui.zoomedview.simplified", true); // Do not display all the zoomed view controls, do not use size heurisistic
 
 pref("ui.touch.radius.enabled", false);
 pref("ui.touch.radius.leftmm", 3);
 pref("ui.touch.radius.topmm", 5);
 pref("ui.touch.radius.rightmm", 3);
 pref("ui.touch.radius.bottommm", 2);
 pref("ui.touch.radius.visitedWeight", 120);
 

--- a/mobile/android/base/java/org/mozilla/gecko/preferences/GeckoPreferences.java
+++ b/mobile/android/base/java/org/mozilla/gecko/preferences/GeckoPreferences.java
@@ -143,17 +143,16 @@ public class GeckoPreferences
     private static final String PREFS_GEO_REPORTING = NON_PREF_PREFIX + "app.geo.reportdata";
     private static final String PREFS_GEO_LEARN_MORE = NON_PREF_PREFIX + "geo.learn_more";
     private static final String PREFS_HEALTHREPORT_LINK = NON_PREF_PREFIX + "healthreport.link";
     private static final String PREFS_DEVTOOLS_REMOTE_USB_ENABLED = "devtools.remote.usb.enabled";
     private static final String PREFS_DEVTOOLS_REMOTE_WIFI_ENABLED = "devtools.remote.wifi.enabled";
     private static final String PREFS_DEVTOOLS_REMOTE_LINK = NON_PREF_PREFIX + "remote_debugging.link";
     private static final String PREFS_TRACKING_PROTECTION = "privacy.trackingprotection.state";
     private static final String PREFS_TRACKING_PROTECTION_PB = "privacy.trackingprotection.pbmode.enabled";
-    private static final String PREFS_ZOOMED_VIEW_ENABLED = "ui.zoomedview.enabled";
     public static final String PREFS_VOICE_INPUT_ENABLED = NON_PREF_PREFIX + "voice_input_enabled";
     public static final String PREFS_QRCODE_ENABLED = NON_PREF_PREFIX + "qrcode_enabled";
     private static final String PREFS_TRACKING_PROTECTION_PRIVATE_BROWSING = "privacy.trackingprotection.pbmode.enabled";
     private static final String PREFS_TRACKING_PROTECTION_LEARN_MORE = NON_PREF_PREFIX + "trackingprotection.learn_more";
     private static final String PREFS_CLEAR_PRIVATE_DATA = NON_PREF_PREFIX + "privacy.clear";
     private static final String PREFS_CLEAR_PRIVATE_DATA_EXIT = NON_PREF_PREFIX + "history.clear_on_exit";
     private static final String PREFS_SCREEN_ADVANCED = NON_PREF_PREFIX + "advanced_screen";
     public static final String PREFS_HOMEPAGE = NON_PREF_PREFIX + "homepage";
@@ -835,22 +834,16 @@ public class GeckoPreferences
                 } else if (PREFS_TAB_QUEUE.equals(key)) {
                     tabQueuePreference = (SwitchPreference) pref;
                     // Only show tab queue pref on nightly builds with the tab queue build flag.
                     if (!TabQueueHelper.TAB_QUEUE_ENABLED) {
                         preferences.removePreference(pref);
                         i--;
                         continue;
                     }
-                } else if (PREFS_ZOOMED_VIEW_ENABLED.equals(key)) {
-                    if (!AppConstants.NIGHTLY_BUILD) {
-                        preferences.removePreference(pref);
-                        i--;
-                        continue;
-                    }
                 } else if (PREFS_VOICE_INPUT_ENABLED.equals(key)) {
                     if (!InputOptionsUtils.supportsVoiceRecognizer(getApplicationContext(), getResources().getString(R.string.voicesearch_prompt))) {
                         // Remove UI for voice input on non nightly builds.
                         preferences.removePreference(pref);
                         i--;
                         continue;
                     }
                 } else if (PREFS_QRCODE_ENABLED.equals(key)) {

--- a/mobile/android/base/locales/en-US/android_strings.dtd
+++ b/mobile/android/base/locales/en-US/android_strings.dtd
@@ -518,21 +518,16 @@
 <!ENTITY doorhanger_login_edit_username_hint "Username">
 <!ENTITY doorhanger_login_edit_password_hint "Password">
 <!ENTITY doorhanger_login_edit_toggle "Show password">
 <!ENTITY doorhanger_login_select_message "Copy password from &formatS;?">
 <!ENTITY doorhanger_login_select_toast_copy "Password copied to clipboard">
 <!ENTITY doorhanger_login_select_action_text "Select another login">
 <!ENTITY doorhanger_login_select_title "Copy password from">
 
-<!-- Localization note (pref_prevent_magnifying_glass): Label for setting that controls
-     whether or not the magnifying glass is disabled. -->
-<!ENTITY pref_magnifying_glass_enabled "Magnify small areas">
-<!ENTITY pref_magnifying_glass_enabled_summary2 "Enlarge links and form fields when touching near them">
-
 <!-- Localization note (pref_scroll_title_bar2): Label for setting that controls
      whether or not the dynamic toolbar is enabled. -->
 <!ENTITY pref_scroll_title_bar2 "Full-screen browsing">
 <!ENTITY pref_scroll_title_bar_summary2 "Hide the &brandShortName; toolbar when scrolling down a page">
 
 <!ENTITY pref_tab_queue_title3 "Tab queue">
 <!ENTITY pref_tab_queue_summary4 "Save links until the next time you open &brandShortName;">
 
@@ -732,24 +727,16 @@ just addresses the organization to follo
 <!-- Miscellaneous -->
 <!-- LOCALIZATION NOTE (ellipsis): This text is appended to a piece of text that does not fit in the
      designated space. Use the unicode ellipsis char, \u2026, or use "..." if \u2026 doesn't suit
      traditions in your locale. -->
 <!ENTITY ellipsis "…">
 
 <!ENTITY colon ":">
 
-<!-- LOCALIZATION NOTE (percent): The percent sign is appended after a number to
-     display a percentage value. formatS is the number, #37 is the code to display a percent sign.
-     This format string is typically used by getString method, in such method the percent sign
-     is a reserved caracter. In order to display one percent sign in the result of getString,
-     double percent signs must be inserted in the format string.
-     This entity is used in the zoomed view to display the zoom factor-->
-<!ENTITY percent "&formatS;&#37;&#37;">
-
 <!-- These are only used for accessibility for the done and overflow-menu buttons in the actionbar.
      They are never shown to users -->
 <!ENTITY actionbar_menu "Menu">
 <!ENTITY actionbar_done "Done">
 
 <!-- Voice search in the awesome bar -->
 <!ENTITY voicesearch_prompt "Speak now">
 

deleted file mode 100644
--- a/mobile/android/base/resources/drawable/toolbar_grey_round.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="@color/toolbar_grey"/>
-    <corners android:radius="@dimen/standard_corner_radius"/>
-</shape>
-

--- a/mobile/android/base/resources/layout/gecko_app.xml
+++ b/mobile/android/base/resources/layout/gecko_app.xml
@@ -42,22 +42,16 @@
                                                android:layout_height="match_parent"
                                                android:visibility="gone"/>
 
             <view class="org.mozilla.gecko.media.VideoPlayer" android:id="@+id/video_player"
                          android:layout_height="match_parent"
                          android:layout_width="match_parent">
             </view>
 
-            <ViewStub android:id="@+id/zoomed_view_stub"
-                      android:inflatedId="@+id/zoomed_view"
-                      android:layout="@layout/zoomed_view"
-                      android:layout_width="wrap_content"
-                      android:layout_height="wrap_content" />
-
             <FrameLayout android:id="@+id/home_screen_container"
                          android:layout_width="match_parent"
                          android:layout_height="match_parent"
                          android:visibility="gone">
 
                 <ViewStub android:id="@+id/home_pager_stub"
                           android:layout="@layout/home_pager"
                           android:layout_width="match_parent"

deleted file mode 100644
--- a/mobile/android/base/resources/layout/zoomed_view.xml
+++ /dev/null
@@ -1,51 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-   This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/.
--->
-
-<org.mozilla.gecko.ZoomedView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:gecko="http://schemas.android.com/apk/res-auto"
-    android:id="@+id/zoomed_view_container"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:background="@drawable/dropshadow"
-    android:padding="@dimen/drawable_dropshadow_size"
-    android:visibility="gone">
-
-    <RelativeLayout
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_alignParentLeft="true"
-        android:layout_alignParentTop="true"
-        android:background="@drawable/toolbar_grey_round">
-        <!--
-           Zoom factor button is invisible by default. Set ui.zoomedview.simplified to false
-           in order to display the button in the zoomed view tool bar
-        -->
-        <TextView
-            android:id="@+id/change_zoom_factor"
-            android:layout_width="wrap_content"
-            android:layout_height="@dimen/zoomed_view_toolbar_height"
-            android:background="@android:color/transparent"
-            android:padding="12dip"
-            android:layout_alignLeft="@+id/zoomed_image_view"
-            android:textSize="16sp"
-            android:textColor="@color/text_and_tabs_tray_grey"
-            android:visibility="invisible"/>
-        <ImageView
-            android:id="@+id/dialog_close"
-            android:scaleType="center"
-            android:layout_width="@dimen/zoomed_view_toolbar_height"
-            android:layout_height="@dimen/zoomed_view_toolbar_height"
-            android:layout_alignRight="@id/zoomed_image_view"
-            android:src="@drawable/close_edit_mode_selector"/>
-        <ImageView
-            android:id="@id/zoomed_image_view"
-            android:layout_below="@id/change_zoom_factor"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"/>
-    </RelativeLayout>
-
-</org.mozilla.gecko.ZoomedView>
\ No newline at end of file

--- a/mobile/android/base/resources/values/dimens.xml
+++ b/mobile/android/base/resources/values/dimens.xml
@@ -196,28 +196,23 @@
     <dimen name="tab_history_combo_margin_start">15dp</dimen>
     <dimen name="tab_history_combo_margin_end">15dp</dimen>
     <dimen name="tab_history_title_fading_width">50dp</dimen>
     <dimen name="tab_history_title_margin_end">15dp</dimen>
     <dimen name="tab_history_title_text_size">14sp</dimen>
     <dimen name="tab_history_bg_width">2dp</dimen>
     <dimen name="tab_history_border_padding">2dp</dimen>
 
-    <!-- ZoomedView dimensions. -->
-    <dimen name="zoomed_view_toolbar_height">44dp</dimen>
-    <dimen name="drawable_dropshadow_size">3dp</dimen>
-
     <!-- Find-In-Page dialog dimensions. -->
     <dimen name="find_in_page_text_margin_start">5dip</dimen>
     <dimen name="find_in_page_text_margin_end">12dip</dimen>
     <dimen name="find_in_page_text_padding_start">10dip</dimen>
     <dimen name="find_in_page_text_padding_end">10dip</dimen>
     <dimen name="find_in_page_status_margin_end">10dip</dimen>
     <dimen name="find_in_page_control_margin_top">2dip</dimen>
-    <dimen name="progress_bar_scroll_offset">1.5dp</dimen>
 
     <!-- Matches the built-in divider height. fwiw, in the framework
          I suspect this is a drawable rather than a dimen.  -->
     <dimen name="action_bar_divider_height">2dp</dimen>
 
     <!-- http://blog.danlew.net/2015/01/06/handling-android-resources-with-non-standard-formats/ -->
     <item name="match_parent" type="dimen">-1</item>
     <item name="wrap_content" type="dimen">-2</item>

--- a/mobile/android/base/resources/xml/preferences_accessibility.xml
+++ b/mobile/android/base/resources/xml/preferences_accessibility.xml
@@ -10,20 +10,16 @@
     <SwitchPreference android:key="android.not_a_preference.font.size.use_system_font_size"
                       android:title="@string/pref_use_system_font_size"
                       android:summary="@string/pref_use_system_font_size_summary" />
 
     <SwitchPreference android:key="browser.ui.zoom.force-user-scalable"
                       android:title="@string/pref_zoom_force_enabled"
                       android:summary="@string/pref_zoom_force_enabled_summary" />
 
-    <SwitchPreference android:key="ui.zoomedview.enabled"
-                      android:title="@string/pref_magnifying_glass_enabled"
-                      android:summary="@string/pref_magnifying_glass_enabled_summary" />
-
     <SwitchPreference android:key="android.not_a_preference.voice_input_enabled"
                       android:title="@string/pref_voice_input"
                       android:summary="@string/pref_voice_input_summary"
                       android:defaultValue="true"/>
 
     <SwitchPreference android:key="android.not_a_preference.qrcode_enabled"
                       android:title="@string/pref_qrcode_enabled"
                       android:summary="@string/pref_qrcode_enabled_summary"

--- a/mobile/android/base/strings.xml.in
+++ b/mobile/android/base/strings.xml.in
@@ -416,19 +416,16 @@
   <string name="doorhanger_login_edit_username_hint">&doorhanger_login_edit_username_hint;</string>
   <string name="doorhanger_login_edit_password_hint">&doorhanger_login_edit_password_hint;</string>
   <string name="doorhanger_login_edit_toggle">&doorhanger_login_edit_toggle;</string>
   <string name="doorhanger_login_select_message">&doorhanger_login_select_message;</string>
   <string name="doorhanger_login_select_toast_copy">&doorhanger_login_select_toast_copy;</string>
   <string name="doorhanger_login_select_action_text">&doorhanger_login_select_action_text;</string>
   <string name="doorhanger_login_select_title">&doorhanger_login_select_title;</string>
 
-  <string name="pref_magnifying_glass_enabled">&pref_magnifying_glass_enabled;</string>
-  <string name="pref_magnifying_glass_enabled_summary">&pref_magnifying_glass_enabled_summary2;</string>
-
   <string name="pref_scroll_title_bar2">&pref_scroll_title_bar2;</string>
   <string name="pref_scroll_title_bar_summary">&pref_scroll_title_bar_summary2;</string>
 
   <string name="pref_compact_tabs">&pref_compact_tabs;</string>
   <string name="pref_compact_tabs_summary">&pref_compact_tabs_summary2;</string>
 
   <string name="page_removed">&page_removed;</string>
 
@@ -596,18 +593,16 @@
   <string name="restrictable_feature_block_list">&restrictable_feature_block_list;</string>
   <string name="restrictable_feature_block_list_description">&restrictable_feature_block_list_description;</string>
 
   <!-- Miscellaneous -->
   <string name="ellipsis">&ellipsis;</string>
 
   <string name="colon">&colon;</string>
 
-  <string name="percent">&percent;</string>
-
   <string name="remote_tabs_last_synced">&remote_tabs_last_synced;</string>
 
   <string name="intent_uri_private_browsing_prompt">&intent_uri_private_browsing_prompt;</string>
   <string name="intent_uri_private_browsing_multiple_match_title">&intent_uri_private_browsing_multiple_match_title;</string>
 
   <string name="devtools_auth_scan_header">&devtools_auth_scan_header;</string>
 
   <string name="unsupported_sdk_version">&unsupported_sdk_version;</string>

--- a/mobile/android/chrome/content/browser.js
+++ b/mobile/android/chrome/content/browser.js
@@ -554,17 +554,16 @@ var BrowserApp = {
       if (!AppConstants.RELEASE_OR_BETA) {
         InitLater(() => WebcompatReporter.init());
       }
 
       // Collect telemetry data.
       // We do this at startup because we want to move away from "gather-telemetry" (bug 1127907)
       InitLater(() => {
         Telemetry.addData("FENNEC_TRACKING_PROTECTION_STATE", parseInt(BrowserApp.getTrackingProtectionState()));
-        Telemetry.addData("ZOOMED_VIEW_ENABLED", Services.prefs.getBoolPref("ui.zoomedview.enabled"));
       });
 
       InitLater(() => LightWeightThemeWebInstaller.init());
       InitLater(() => CastingApps.init(), window, "CastingApps");
       InitLater(() => Services.search.init(), Services, "search");
       InitLater(() => DownloadNotifications.init(), window, "DownloadNotifications");
 
       // Bug 778855 - Perf regression if we do this here. To be addressed in bug 779008.
@@ -4506,18 +4505,16 @@ Tab.prototype = {
       sameDocument: sameDocument,
 
       canGoBack: webNav.canGoBack,
       canGoForward: webNav.canGoForward,
     };
 
     GlobalEventDispatcher.sendRequest(message);
 
-    BrowserEventHandler.closeZoomedView();
-
     notifyManifestStatus(this.browser);
 
     if (!sameDocument) {
       // XXX This code assumes that this is the earliest hook we have at which
       // browser.contentDocument is changed to the new document we're loading
       this.contentDocumentIsDisplayed = false;
       this.hasTouchListener = false;
       Services.obs.notifyObservers(this.browser, "Session:NotifyLocationChange");
@@ -4727,20 +4724,16 @@ Tab.prototype = {
     Ci.nsIObserver,
     Ci.nsISupportsWeakReference,
     Ci.nsIBrowserTab
   ])
 };
 
 var BrowserEventHandler = {
   init: function init() {
-    this._clickInZoomedView = false;
-    Services.obs.addObserver(this, "Gesture:SingleTap");
-    Services.obs.addObserver(this, "Gesture:ClickInZoomedView");
-
     BrowserApp.deck.addEventListener("touchend", this, true);
 
     BrowserApp.deck.addEventListener("DOMUpdatePageReport", PopupBlockerObserver.onUpdatePageReport);
     BrowserApp.deck.addEventListener("MozMouseHittest", this, true);
     BrowserApp.deck.addEventListener("OpenMediaWithExternalApp", this, true);
 
     InitLater(() => BrowserApp.deck.addEventListener("click", InputWidgetHelper, true));
     InitLater(() => BrowserApp.deck.addEventListener("click", SelectHelper, true));
@@ -4808,83 +4801,16 @@ var BrowserEventHandler = {
         (aElement instanceof Ci.nsIDOMHTMLAreaElement && aElement.href))) {
       try {
         return Services.io.newURI(aElement.href);
       } catch (e) {}
     }
     return null;
   },
 
-  observe: function(aSubject, aTopic, aData) {
-    // the remaining events are all dependent on the browser content document being the
-    // same as the browser displayed document. if they are not the same, we should ignore
-    // the event.
-    if (BrowserApp.isBrowserContentDocumentDisplayed()) {
-      this.handleUserEvent(aTopic, aData);
-    }
-  },
-
-  handleUserEvent: function(aTopic, aData) {
-    switch (aTopic) {
-
-      case "Gesture:ClickInZoomedView":
-        this._clickInZoomedView = true;
-        break;
-
-      case "Gesture:SingleTap": {
-        let focusedElement = BrowserApp.getFocusedInput(BrowserApp.selectedBrowser);
-        let data = JSON.parse(aData);
-        let {x, y} = data;
-
-        if (this._inCluster && this._clickInZoomedView != true) {
-          // If there is a focused element, the display of the zoomed view won't remove the focus.
-          // In this case, the form assistant linked to the focused element will never be closed.
-          // To avoid this situation, the focus is moved and the form assistant is closed.
-          if (focusedElement) {
-            try {
-              Services.focus.moveFocus(BrowserApp.selectedBrowser.contentWindow, null, Services.focus.MOVEFOCUS_ROOT, 0);
-            } catch(e) {
-              Cu.reportError(e);
-            }
-            WindowEventDispatcher.sendRequest({ type: "FormAssist:Hide" });
-          }
-          this._clusterClicked(x, y);
-        } else {
-          if (this._clickInZoomedView != true) {
-            this.closeZoomedView(/* animate */ true);
-          }
-        }
-        this._clickInZoomedView = false;
-        this._cancelTapHighlight();
-        break;
-      }
-
-      default:
-        dump('BrowserEventHandler.handleUserEvent: unexpected topic "' + aTopic + '"');
-        break;
-    }
-  },
-
-  closeZoomedView: function(aAnimate) {
-    WindowEventDispatcher.sendRequest({
-      type: "Gesture:CloseZoomedView",
-      animate: !!aAnimate,
-    });
-  },
-
-  _clusterClicked: function(aX, aY) {
-    WindowEventDispatcher.sendRequest({
-      type: "Gesture:ClusteredLinksClicked",
-      clickPosition: {
-        x: aX,
-        y: aY
-      }
-    });
-  },
-
   _highlightElement: null,
 
   _doTapHighlight: function _doTapHighlight(aElement) {
     this._highlightElement = aElement;
   },
 
   _cancelTapHighlight: function _cancelTapHighlight() {
     if (!this._highlightElement)