From 5f89c3da66862d82fa27092986c4065aba3574ff Mon Sep 17 00:00:00 2001
From: Ascrod <32915892+Ascrod@users.noreply.github.com>
Date: Wed, 30 May 2018 17:45:05 -0400
Subject: Remove Social API.

---
 browser/app/profile/firefox.js                     |    7 -
 browser/base/content/aboutProviderDirectory.xhtml  |   60 --
 browser/base/content/aboutSocialError.xhtml        |  111 --
 browser/base/content/browser-context.inc           |   20 -
 browser/base/content/browser-sets.inc              |    3 -
 browser/base/content/browser-social.js             |  503 ---------
 browser/base/content/browser.css                   |    5 -
 browser/base/content/browser.js                    |   10 +-
 browser/base/content/browser.xul                   |   26 -
 browser/base/content/content.js                    |   31 -
 browser/base/content/global-scripts.inc            |    1 -
 browser/base/content/nsContextMenu.js              |   47 +-
 browser/base/content/social-content.js             |  172 ---
 browser/base/content/web-panels.xul                |    1 -
 browser/base/jar.mn                                |    4 -
 browser/components/about/AboutRedirector.cpp       |   10 -
 browser/components/build/nsModule.cpp              |    2 -
 .../customizableui/CustomizableWidgets.jsm         |   41 -
 .../customizableui/content/panelUI.inc.xul         |    2 -
 browser/docs/UITelemetry.rst                       |    1 -
 browser/locales/en-US/chrome/browser/browser.dtd   |   25 +-
 .../en-US/chrome/browser/browser.properties        |   23 -
 .../customizableui/customizableWidgets.properties  |    3 -
 browser/modules/BrowserUITelemetry.jsm             |   11 +-
 browser/modules/Social.jsm                         |  272 -----
 browser/modules/SocialService.jsm                  | 1097 --------------------
 browser/modules/moz.build                          |    2 -
 browser/themes/linux/browser.css                   |   50 -
 browser/themes/linux/customizableui/panelUI.css    |    8 -
 browser/themes/linux/jar.mn                        |    4 -
 browser/themes/osx/browser.css                     |   88 --
 browser/themes/osx/jar.mn                          |    4 -
 browser/themes/shared/aboutProviderDirectory.css   |   30 -
 browser/themes/shared/browser.inc                  |    2 +-
 .../themes/shared/customizableui/panelUI.inc.css   |    4 -
 browser/themes/shared/jar.inc.mn                   |    4 -
 browser/themes/shared/menupanel.inc.css            |   10 -
 browser/themes/shared/notification-icons.inc.css   |   22 -
 browser/themes/shared/social/gear_clicked.png      |  Bin 1262 -> 0 bytes
 browser/themes/shared/social/gear_default.png      |  Bin 1271 -> 0 bytes
 browser/themes/shared/social/social.inc.css        |   23 -
 browser/themes/shared/toolbarbuttons.inc.css       |    8 -
 browser/themes/windows/browser.css                 |   75 --
 browser/themes/windows/customizableui/panelUI.css  |    8 -
 browser/themes/windows/jar.mn                      |    2 -
 45 files changed, 16 insertions(+), 2816 deletions(-)
 delete mode 100644 browser/base/content/aboutProviderDirectory.xhtml
 delete mode 100644 browser/base/content/aboutSocialError.xhtml
 delete mode 100644 browser/base/content/browser-social.js
 delete mode 100644 browser/base/content/social-content.js
 delete mode 100644 browser/modules/Social.jsm
 delete mode 100644 browser/modules/SocialService.jsm
 delete mode 100644 browser/themes/shared/aboutProviderDirectory.css
 delete mode 100644 browser/themes/shared/social/gear_clicked.png
 delete mode 100644 browser/themes/shared/social/gear_default.png
 delete mode 100644 browser/themes/shared/social/social.inc.css

(limited to 'browser')

diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index e432c511d..ede62fd5e 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -1118,13 +1118,6 @@ pref("pdfjs.previousHandler.alwaysAskBeforeHandling", false);
 // (This is intentionally on the high side; see bug 746055.)
 pref("image.mem.max_decoded_image_kb", 256000);
 
-pref("social.sidebar.unload_timeout_ms", 10000);
-
-// Activation from inside of share panel is possible if activationPanelEnabled
-// is true. Pref'd off for release while usage testing is done through beta.
-pref("social.share.activationPanelEnabled", true);
-pref("social.shareDirectory", "https://activations.cdn.mozilla.net/sharePanel.html");
-
 // Block insecure active content on https pages
 pref("security.mixed_content.block_active_content", true);
 
diff --git a/browser/base/content/aboutProviderDirectory.xhtml b/browser/base/content/aboutProviderDirectory.xhtml
deleted file mode 100644
index 596ede4b3..000000000
--- a/browser/base/content/aboutProviderDirectory.xhtml
+++ /dev/null
@@ -1,60 +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/. -->
-
-<!DOCTYPE html [
-  <!ENTITY % htmlDTD
-    PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-    "DTD/xhtml1-strict.dtd">
-  %htmlDTD;
-  <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-  %brandDTD;
-  <!ENTITY % browserDTD SYSTEM "chrome://browser/locale/browser.dtd">
-  %browserDTD;
-]>
-
-<html xmlns="http://www.w3.org/1999/xhtml">
-  <head>
-    <title>&social.directory.label;</title>
-    <link rel="stylesheet" type="text/css" media="all"
-          href="chrome://browser/skin/aboutProviderDirectory.css"/>
-  </head>
-
-  <body>
-    <div id="activation-link" hidden="true">
-      <div id="message-box">
-        <p>&social.directory.text;</p>
-      </div>
-      <div id="button-box">
-        <button onclick="openDirectory()">&social.directory.button;</button>
-      </div>
-    </div>
-    <div id="activation" hidden="true">
-      <p>&social.directory.introText;</p>
-      <div><iframe id="activation-frame"/></div>
-      <p><a class="link" onclick="openDirectory()">&social.directory.viewmore.text;</a></p>
-    </div>
-  </body>
-
-  <script type="text/javascript;version=1.8"><![CDATA[
-    const Cu = Components.utils;
-
-    Cu.import("resource://gre/modules/Services.jsm");
-
-    function openDirectory() {
-      let url = Services.prefs.getCharPref("social.directories").split(',')[0];
-      window.open(url);
-      window.close();
-    }
-
-    if (Services.prefs.getBoolPref("social.share.activationPanelEnabled")) {
-      let url = Services.prefs.getCharPref("social.shareDirectory");
-      document.getElementById("activation-frame").setAttribute("src", url);
-      document.getElementById("activation").removeAttribute("hidden");
-    } else {
-      document.getElementById("activation-link").removeAttribute("hidden");
-    }
-  ]]></script>
-</html>
diff --git a/browser/base/content/aboutSocialError.xhtml b/browser/base/content/aboutSocialError.xhtml
deleted file mode 100644
index 94a4e3dbd..000000000
--- a/browser/base/content/aboutSocialError.xhtml
+++ /dev/null
@@ -1,111 +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/. -->
-
-<!DOCTYPE html [
-  <!ENTITY % htmlDTD
-    PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-    "DTD/xhtml1-strict.dtd">
-  %htmlDTD;
-  <!ENTITY % netErrorDTD SYSTEM "chrome://global/locale/netError.dtd">
-  %netErrorDTD;
-]>
-
-<html xmlns="http://www.w3.org/1999/xhtml">
-  <head>
-    <title>&loadError.label;</title>
-    <link rel="stylesheet" href="chrome://browser/skin/aboutNetError.css" type="text/css" media="all" />
-    <link rel="stylesheet" type="text/css" media="all" href="chrome://browser/skin/aboutSocialError.css"/>
-    <link rel="icon" type="image/png" id="favicon" href="chrome://global/skin/icons/warning-16.png"/>
-  </head>
-
-  <body>
-    <div id="errorPageContainer">
-
-      <!-- Error Title -->
-      <div id="errorTitle">
-        <p id="errorShortDescText" >foo</p>
-      </div>
-
-    <div id="button-box">
-      <button id="btnTryAgain" onclick="tryAgainButton()"/>
-    </div>
-    </div>
-  </body>
-
-  <script type="text/javascript;version=1.8"><![CDATA[
-    const Cu = Components.utils;
-
-    Cu.import("resource://gre/modules/Services.jsm");
-    Cu.import("resource:///modules/Social.jsm");
-
-    let config = {
-      tryAgainCallback: reloadProvider
-    }
-
-    function parseQueryString() {
-      let searchParams = new URLSearchParams(document.documentURI.split("?")[1]);
-      let mode = searchParams.get("mode");
-      config.origin = searchParams.get("origin");
-      let encodedURL = searchParams.get("url");
-      let url = decodeURIComponent(encodedURL);
-      // directory does not have origin set, in that case use the url origin for
-      // the error message.
-      if (!config.origin) {
-        let URI = Services.io.newURI(url, null, null);
-        config.origin =
-          Services.scriptSecurityManager.createCodebasePrincipal(URI, {}).origin;
-      }
-
-      switch (mode) {
-        case "compactInfo":
-          document.getElementById("btnTryAgain").style.display = 'none';
-          break;
-        case "tryAgainOnly":
-          //intentional fall-through
-        case "tryAgain":
-          config.tryAgainCallback = loadQueryURL;
-          config.queryURL = url;
-          break;
-        default:
-          break;
-      }
-    }
-
-    function setUpStrings() {
-      let brandBundle = Services.strings.createBundle("chrome://branding/locale/brand.properties");
-      let browserBundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
-
-      let productName = brandBundle.GetStringFromName("brandShortName");
-      let provider = Social._getProviderFromOrigin(config.origin);
-      let providerName = provider ? provider.name : config.origin;
-
-      // Sets up the error message
-      let msg = browserBundle.formatStringFromName("social.error.message", [productName, providerName], 2);
-      document.getElementById("errorShortDescText").textContent = msg;
-
-      // Sets up the buttons' labels and accesskeys
-      let btnTryAgain = document.getElementById("btnTryAgain");
-      btnTryAgain.textContent = browserBundle.GetStringFromName("social.error.tryAgain.label");
-      btnTryAgain.accessKey = browserBundle.GetStringFromName("social.error.tryAgain.accesskey");
-    }
-
-    function tryAgainButton() {
-      config.tryAgainCallback();
-    }
-
-    function loadQueryURL() {
-      window.location.href = config.queryURL;
-    }
-
-    function reloadProvider() {
-      let provider = Social._getProviderFromOrigin(config.origin);
-      provider.reload();
-    }
-
-    parseQueryString();
-    setUpStrings();
-  ]]></script>
-</html>
diff --git a/browser/base/content/browser-context.inc b/browser/base/content/browser-context.inc
index 3061cccdd..9fa90b11c 100644
--- a/browser/base/content/browser-context.inc
+++ b/browser/base/content/browser-context.inc
@@ -85,10 +85,6 @@
                 label="&bookmarkThisLinkCmd.label;"
                 accesskey="&bookmarkThisLinkCmd.accesskey;"
                 oncommand="gContextMenu.bookmarkLink();"/>
-      <menuitem id="context-sharelink"
-                label="&shareLink.label;"
-                accesskey="&shareLink.accesskey;"
-                oncommand="gContextMenu.shareLink();"/>
       <menuitem id="context-savelink"
                 label="&saveLinkCmd.label;"
                 accesskey="&saveLinkCmd.accesskey;"
@@ -212,10 +208,6 @@
                 label="&saveImageCmd.label;"
                 accesskey="&saveImageCmd.accesskey;"
                 oncommand="gContextMenu.saveMedia();"/>
-      <menuitem id="context-shareimage"
-                label="&shareImage.label;"
-                accesskey="&shareImage.accesskey;"
-                oncommand="gContextMenu.shareImage();"/>
       <menuitem id="context-sendimage"
                 label="&emailImageCmd.label;"
                 accesskey="&emailImageCmd.accesskey;"
@@ -237,10 +229,6 @@
                 label="&saveVideoCmd.label;"
                 accesskey="&saveVideoCmd.accesskey;"
                 oncommand="gContextMenu.saveMedia();"/>
-      <menuitem id="context-sharevideo"
-                label="&shareVideo.label;"
-                accesskey="&shareVideo.accesskey;"
-                oncommand="gContextMenu.shareVideo();"/>
       <menuitem id="context-saveaudio"
                 label="&saveAudioCmd.label;"
                 accesskey="&saveAudioCmd.accesskey;"
@@ -271,10 +259,6 @@
                 accesskey="&hidePluginCmd.accesskey;"
                 oncommand="gContextMenu.hidePlugin();"/>
       <menuseparator id="context-sep-ctp"/>
-      <menuitem id="context-sharepage"
-                label="&sharePageCmd.label;"
-                accesskey="&sharePageCmd.accesskey;"
-                oncommand="SocialShare.sharePage();"/>
       <menuitem id="context-savepage"
                 label="&savePageCmd.label;"
                 accesskey="&savePageCmd.accesskey2;"
@@ -334,10 +318,6 @@
         <menupopup id="context-sendlinktodevice-popup"
                    onpopupshowing="gFxAccounts.populateSendTabToDevicesMenu(event.target, gContextMenu.linkURL, gContextMenu.linkTextStr);"/>
       </menu>
-      <menuitem id="context-shareselect"
-                label="&shareSelect.label;"
-                accesskey="&shareSelect.accesskey;"
-                oncommand="gContextMenu.shareSelect();"/>
       <menuseparator id="frame-sep"/>
       <menu id="frame" label="&thisFrameMenu.label;" accesskey="&thisFrameMenu.accesskey;">
         <menupopup>
diff --git a/browser/base/content/browser-sets.inc b/browser/base/content/browser-sets.inc
index d0c3d11cd..6ea057d93 100644
--- a/browser/base/content/browser-sets.inc
+++ b/browser/base/content/browser-sets.inc
@@ -105,8 +105,6 @@
       oncommand="OpenBrowserWindow({private: true});" reserved="true"/>
     <command id="History:UndoCloseTab" oncommand="undoCloseTab();"/>
     <command id="History:UndoCloseWindow" oncommand="undoCloseWindow();"/>
-    <command id="Social:SharePage" oncommand="SocialShare.sharePage();"/>
-    <command id="Social:Addons" oncommand="BrowserOpenAddonsMgr('addons://list/service');"/>
   </commandset>
 
   <commandset id="placesCommands">
@@ -117,7 +115,6 @@
   </commandset>
 
   <broadcasterset id="mainBroadcasterSet">
-    <broadcaster id="Social:PageShareable" disabled="true"/>
     <broadcaster id="viewBookmarksSidebar" autoCheck="false" label="&bookmarksButton.label;"
                  type="checkbox" group="sidebar" sidebarurl="chrome://browser/content/bookmarks/bookmarksPanel.xul"
                  oncommand="SidebarUI.toggle('viewBookmarksSidebar');"/>
diff --git a/browser/base/content/browser-social.js b/browser/base/content/browser-social.js
deleted file mode 100644
index b470efd3d..000000000
--- a/browser/base/content/browser-social.js
+++ /dev/null
@@ -1,503 +0,0 @@
-/* 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/. */
-
-// the "exported" symbols
-var SocialUI,
-    SocialShare,
-    SocialActivationListener;
-
-(function() {
-
-XPCOMUtils.defineLazyGetter(this, "OpenGraphBuilder", function() {
-  let tmp = {};
-  Cu.import("resource:///modules/Social.jsm", tmp);
-  return tmp.OpenGraphBuilder;
-});
-
-XPCOMUtils.defineLazyGetter(this, "DynamicResizeWatcher", function() {
-  let tmp = {};
-  Cu.import("resource:///modules/Social.jsm", tmp);
-  return tmp.DynamicResizeWatcher;
-});
-
-SocialUI = {
-  _initialized: false,
-
-  // Called on delayed startup to initialize the UI
-  init: function SocialUI_init() {
-    if (this._initialized) {
-      return;
-    }
-    let mm = window.getGroupMessageManager("social");
-    mm.loadFrameScript("chrome://browser/content/content.js", true);
-    mm.loadFrameScript("chrome://browser/content/social-content.js", true);
-
-    Services.obs.addObserver(this, "social:providers-changed", false);
-
-    CustomizableUI.addListener(this);
-    SocialActivationListener.init();
-
-    Social.init().then((update) => {
-      if (update)
-        this._providersChanged();
-    });
-
-    this._initialized = true;
-  },
-
-  // Called on window unload
-  uninit: function SocialUI_uninit() {
-    if (!this._initialized) {
-      return;
-    }
-    Services.obs.removeObserver(this, "social:providers-changed");
-
-    CustomizableUI.removeListener(this);
-    SocialActivationListener.uninit();
-
-    this._initialized = false;
-  },
-
-  observe: function SocialUI_observe(subject, topic, data) {
-    switch (topic) {
-      case "social:providers-changed":
-        this._providersChanged();
-        break;
-    }
-  },
-
-  _providersChanged: function() {
-    SocialShare.populateProviderMenu();
-  },
-
-  showLearnMore: function() {
-    let url = Services.urlFormatter.formatURLPref("app.support.baseURL") + "social-api";
-    openUILinkIn(url, "tab");
-  },
-
-  closeSocialPanelForLinkTraversal: function (target, linkNode) {
-    // No need to close the panel if this traversal was not retargeted
-    if (target == "" || target == "_self")
-      return;
-
-    // Check to see whether this link traversal was in a social panel
-    let win = linkNode.ownerGlobal;
-    let container = win.QueryInterface(Ci.nsIInterfaceRequestor)
-                                  .getInterface(Ci.nsIWebNavigation)
-                                  .QueryInterface(Ci.nsIDocShell)
-                                  .chromeEventHandler;
-    let containerParent = container.parentNode;
-    if (containerParent.classList.contains("social-panel") &&
-        containerParent instanceof Ci.nsIDOMXULPopupElement) {
-      // allow the link traversal to finish before closing the panel
-      setTimeout(() => {
-        containerParent.hidePopup();
-      }, 0);
-    }
-  },
-
-  get _chromeless() {
-    // Is this a popup window that doesn't want chrome shown?
-    let docElem = document.documentElement;
-    // extrachrome is not restored during session restore, so we need
-    // to check for the toolbar as well.
-    let chromeless = docElem.getAttribute("chromehidden").includes("extrachrome") ||
-                     docElem.getAttribute('chromehidden').includes("toolbar");
-    // This property is "fixed" for a window, so avoid doing the check above
-    // multiple times...
-    delete this._chromeless;
-    this._chromeless = chromeless;
-    return chromeless;
-  },
-
-  get enabled() {
-    // Returns whether social is enabled *for this window*.
-    if (this._chromeless)
-      return false;
-    return Social.providers.length > 0;
-  },
-
-  canSharePage: function(aURI) {
-    return (aURI && (aURI.schemeIs('http') || aURI.schemeIs('https')));
-  },
-
-  onCustomizeEnd: function(aWindow) {
-    if (aWindow != window)
-      return;
-    // customization mode gets buttons out of sync with command updating, fix
-    // the disabled state
-    let canShare = this.canSharePage(gBrowser.currentURI);
-    let shareButton = SocialShare.shareButton;
-    if (shareButton) {
-      if (canShare) {
-        shareButton.removeAttribute("disabled")
-      } else {
-        shareButton.setAttribute("disabled", "true")
-      }
-    }
-  },
-
-  // called on tab/urlbar/location changes and after customization. Update
-  // anything that is tab specific.
-  updateState: function() {
-    goSetCommandEnabled("Social:PageShareable", this.canSharePage(gBrowser.currentURI));
-  }
-}
-
-// message manager handlers
-SocialActivationListener = {
-  init: function() {
-    messageManager.addMessageListener("Social:Activation", this);
-  },
-  uninit: function() {
-    messageManager.removeMessageListener("Social:Activation", this);
-  },
-  receiveMessage: function(aMessage) {
-    let data = aMessage.json;
-    let browser = aMessage.target;
-    data.window = window;
-    // if the source if the message is the share panel, we do a one-click
-    // installation. The source of activations is controlled by the
-    // social.directories preference
-    let options;
-    if (browser == SocialShare.iframe && Services.prefs.getBoolPref("social.share.activationPanelEnabled")) {
-      options = { bypassContentCheck: true, bypassInstallPanel: true };
-    }
-
-    Social.installProvider(data, function(manifest) {
-      Social.activateFromOrigin(manifest.origin, function(provider) {
-        if (provider.shareURL) {
-          // Ensure that the share button is somewhere usable.
-          // SocialShare.shareButton may return null if it is in the menu-panel
-          // and has never been visible, so we check the widget directly. If
-          // there is no area for the widget we move it into the toolbar.
-          let widget = CustomizableUI.getWidget("social-share-button");
-          // If the panel is already open, we can be sure that the provider can
-          // already be accessed, possibly anchored to another toolbar button.
-          // In that case we don't move the widget.
-          if (!widget.areaType && SocialShare.panel.state != "open") {
-            CustomizableUI.addWidgetToArea("social-share-button", CustomizableUI.AREA_NAVBAR);
-            // Ensure correct state.
-            SocialUI.onCustomizeEnd(window);
-          }
-
-          // make this new provider the selected provider. If the panel hasn't
-          // been opened, we need to make the frame first.
-          SocialShare._createFrame();
-          SocialShare.iframe.setAttribute('src', 'data:text/plain;charset=utf8,');
-          SocialShare.iframe.setAttribute('origin', provider.origin);
-          // get the right button selected
-          SocialShare.populateProviderMenu();
-          if (SocialShare.panel.state == "open") {
-            SocialShare.sharePage(provider.origin);
-          }
-        }
-        if (provider.postActivationURL) {
-          // if activated from an open share panel, we load the landing page in
-          // a background tab
-          gBrowser.loadOneTab(provider.postActivationURL, {inBackground: SocialShare.panel.state == "open"});
-        }
-      });
-    }, options);
-  }
-}
-
-SocialShare = {
-  get _dynamicResizer() {
-    delete this._dynamicResizer;
-    this._dynamicResizer = new DynamicResizeWatcher();
-    return this._dynamicResizer;
-  },
-
-  // Share panel may be attached to the overflow or menu button depending on
-  // customization, we need to manage open state of the anchor.
-  get anchor() {
-    let widget = CustomizableUI.getWidget("social-share-button");
-    return widget.forWindow(window).anchor;
-  },
-  // Holds the anchor node in use whilst the panel is open, because it may vary.
-  _currentAnchor: null,
-
-  get panel() {
-    return document.getElementById("social-share-panel");
-  },
-
-  get iframe() {
-    // panel.firstChild is our toolbar hbox, panel.lastChild is the iframe
-    // container hbox used for an interstitial "loading" graphic
-    return this.panel.lastChild.firstChild;
-  },
-
-  uninit: function () {
-    if (this.iframe) {
-      let mm = this.messageManager;
-      mm.removeMessageListener("PageVisibility:Show", this);
-      mm.removeMessageListener("PageVisibility:Hide", this);
-      mm.removeMessageListener("Social:DOMWindowClose", this);
-      this.iframe.removeEventListener("load", this);
-      this.iframe.remove();
-    }
-  },
-
-  _createFrame: function() {
-    let panel = this.panel;
-    if (this.iframe)
-      return;
-    this.panel.hidden = false;
-    // create and initialize the panel for this window
-    let iframe = document.createElement("browser");
-    iframe.setAttribute("type", "content");
-    iframe.setAttribute("class", "social-share-frame");
-    iframe.setAttribute("context", "contentAreaContextMenu");
-    iframe.setAttribute("tooltip", "aHTMLTooltip");
-    iframe.setAttribute("disableglobalhistory", "true");
-    iframe.setAttribute("flex", "1");
-    iframe.setAttribute("message", "true");
-    iframe.setAttribute("messagemanagergroup", "social");
-    panel.lastChild.appendChild(iframe);
-    let mm = this.messageManager;
-    mm.addMessageListener("PageVisibility:Show", this);
-    mm.addMessageListener("PageVisibility:Hide", this);
-    mm.sendAsyncMessage("Social:SetErrorURL",
-                        { template: "about:socialerror?mode=compactInfo&origin=%{origin}&url=%{url}" });
-    iframe.addEventListener("load", this, true);
-    mm.addMessageListener("Social:DOMWindowClose", this);
-
-    this.populateProviderMenu();
-  },
-
-  get messageManager() {
-    // The xbl bindings for the iframe may not exist yet, so we can't
-    // access iframe.messageManager directly - but can get at it with this dance.
-    return this.iframe.QueryInterface(Components.interfaces.nsIFrameLoaderOwner).frameLoader.messageManager;
-  },
-
-  receiveMessage: function(aMessage) {
-    let iframe = this.iframe;
-    switch(aMessage.name) {
-      case "PageVisibility:Show":
-        SocialShare._dynamicResizer.start(iframe.parentNode, iframe);
-        break;
-      case "PageVisibility:Hide":
-        SocialShare._dynamicResizer.stop();
-        break;
-      case "Social:DOMWindowClose":
-        this.panel.hidePopup();
-        break;
-    }
-  },
-
-  handleEvent: function(event) {
-    switch (event.type) {
-      case "load": {
-        this.iframe.parentNode.removeAttribute("loading");
-        if (this.currentShare)
-          SocialShare.messageManager.sendAsyncMessage("Social:OpenGraphData", this.currentShare);
-      }
-    }
-  },
-
-  getSelectedProvider: function() {
-    let provider;
-    let lastProviderOrigin = this.iframe && this.iframe.getAttribute("origin");
-    if (lastProviderOrigin) {
-      provider = Social._getProviderFromOrigin(lastProviderOrigin);
-    }
-    return provider;
-  },
-
-  createTooltip: function(event) {
-    let tt = event.target;
-    let provider = Social._getProviderFromOrigin(tt.triggerNode.getAttribute("origin"));
-    tt.firstChild.setAttribute("value", provider.name);
-    tt.lastChild.setAttribute("value", provider.origin);
-  },
-
-  populateProviderMenu: function() {
-    if (!this.iframe)
-      return;
-    let providers = Social.providers.filter(p => p.shareURL);
-    let hbox = document.getElementById("social-share-provider-buttons");
-    // remove everything before the add-share-provider button (which should also
-    // be lastChild if any share providers were added)
-    let addButton = document.getElementById("add-share-provider");
-    while (hbox.lastChild != addButton) {
-      hbox.removeChild(hbox.lastChild);
-    }
-    let selectedProvider = this.getSelectedProvider();
-    for (let provider of providers) {
-      let button = document.createElement("toolbarbutton");
-      button.setAttribute("class", "toolbarbutton-1 share-provider-button");
-      button.setAttribute("type", "radio");
-      button.setAttribute("group", "share-providers");
-      button.setAttribute("image", provider.iconURL);
-      button.setAttribute("tooltip", "share-button-tooltip");
-      button.setAttribute("origin", provider.origin);
-      button.setAttribute("label", provider.name);
-      button.setAttribute("oncommand", "SocialShare.sharePage(this.getAttribute('origin'));");
-      if (provider == selectedProvider) {
-        this.defaultButton = button;
-      }
-      hbox.appendChild(button);
-    }
-    if (!this.defaultButton) {
-      this.defaultButton = addButton;
-    }
-    this.defaultButton.setAttribute("checked", "true");
-  },
-
-  get shareButton() {
-    // web-panels (bookmark/sidebar) don't include customizableui, so
-    // nsContextMenu fails when accessing shareButton, breaking
-    // browser_bug409481.js.
-    if (!window.CustomizableUI)
-      return null;
-    let widget = CustomizableUI.getWidget("social-share-button");
-    if (!widget || !widget.areaType)
-      return null;
-    return widget.forWindow(window).node;
-  },
-
-  _onclick: function() {
-    Services.telemetry.getHistogramById("SOCIAL_PANEL_CLICKS").add(0);
-  },
-
-  onShowing: function() {
-    (this._currentAnchor || this.anchor).setAttribute("open", "true");
-    this.iframe.addEventListener("click", this._onclick, true);
-  },
-
-  onHidden: function() {
-    (this._currentAnchor || this.anchor).removeAttribute("open");
-    this._currentAnchor = null;
-    this.iframe.docShellIsActive = false;
-    this.iframe.removeEventListener("click", this._onclick, true);
-    this.iframe.setAttribute("src", "data:text/plain;charset=utf8,");
-    // make sure that the frame is unloaded after it is hidden
-    this.messageManager.sendAsyncMessage("Social:ClearFrame");
-    this.currentShare = null;
-    // share panel use is over, purge any history
-    this.iframe.purgeSessionHistory();
-  },
-
-  sharePage: function(providerOrigin, graphData, target, anchor) {
-    // if providerOrigin is undefined, we use the last-used provider, or the
-    // current/default provider.  The provider selection in the share panel
-    // will call sharePage with an origin for us to switch to.
-    this._createFrame();
-    let iframe = this.iframe;
-
-    // graphData is an optional param that either defines the full set of data
-    // to be shared, or partial data about the current page. It is set by a call
-    // in mozSocial API, or via nsContentMenu calls. If it is present, it MUST
-    // define at least url. If it is undefined, we're sharing the current url in
-    // the browser tab.
-    let pageData = graphData ? graphData : this.currentShare;
-    let sharedURI = pageData ? Services.io.newURI(pageData.url, null, null) :
-                                gBrowser.currentURI;
-    if (!SocialUI.canSharePage(sharedURI))
-      return;
-
-    let browserMM = gBrowser.selectedBrowser.messageManager;
-
-    // the point of this action type is that we can use existing share
-    // endpoints (e.g. oexchange) that do not support additional
-    // socialapi functionality.  One tweak is that we shoot an event
-    // containing the open graph data.
-    let _dataFn;
-    if (!pageData || sharedURI == gBrowser.currentURI) {
-      browserMM.addMessageListener("PageMetadata:PageDataResult", _dataFn = (msg) => {
-        browserMM.removeMessageListener("PageMetadata:PageDataResult", _dataFn);
-        let pageData = msg.json;
-        if (graphData) {
-          // overwrite data retreived from page with data given to us as a param
-          for (let p in graphData) {
-            pageData[p] = graphData[p];
-          }
-        }
-        this.sharePage(providerOrigin, pageData, target, anchor);
-      });
-      browserMM.sendAsyncMessage("PageMetadata:GetPageData", null, { target });
-      return;
-    }
-    // if this is a share of a selected item, get any microformats
-    if (!pageData.microformats && target) {
-      browserMM.addMessageListener("PageMetadata:MicroformatsResult", _dataFn = (msg) => {
-        browserMM.removeMessageListener("PageMetadata:MicroformatsResult", _dataFn);
-        pageData.microformats = msg.data;
-        this.sharePage(providerOrigin, pageData, target, anchor);
-      });
-      browserMM.sendAsyncMessage("PageMetadata:GetMicroformats", null, { target });
-      return;
-    }
-    this.currentShare = pageData;
-
-    let provider;
-    if (providerOrigin)
-      provider = Social._getProviderFromOrigin(providerOrigin);
-    else
-      provider = this.getSelectedProvider();
-    if (!provider || !provider.shareURL) {
-      this.showDirectory(anchor);
-      return;
-    }
-    // check the menu button
-    let hbox = document.getElementById("social-share-provider-buttons");
-    let btn = hbox.querySelector("[origin='" + provider.origin + "']");
-    if (btn)
-      btn.checked = true;
-
-    let shareEndpoint = OpenGraphBuilder.generateEndpointURL(provider.shareURL, pageData);
-
-    this._dynamicResizer.stop();
-    let size = provider.getPageSize("share");
-    if (size) {
-      // let the css on the share panel define width, but height
-      // calculations dont work on all sites, so we allow that to be
-      // defined.
-      delete size.width;
-    }
-
-    // if we've already loaded this provider/page share endpoint, we don't want
-    // to add another load event listener.
-    let endpointMatch = shareEndpoint == iframe.getAttribute("src");
-    if (endpointMatch) {
-      this._dynamicResizer.start(iframe.parentNode, iframe, size);
-      iframe.docShellIsActive = true;
-      SocialShare.messageManager.sendAsyncMessage("Social:OpenGraphData", this.currentShare);
-    } else {
-      iframe.parentNode.setAttribute("loading", "true");
-    }
-    // if the user switched between share providers we do not want that history
-    // available.
-    iframe.purgeSessionHistory();
-
-    // always ensure that origin belongs to the endpoint
-    let uri = Services.io.newURI(shareEndpoint, null, null);
-    iframe.setAttribute("origin", provider.origin);
-    iframe.setAttribute("src", shareEndpoint);
-    this._openPanel(anchor);
-  },
-
-  showDirectory: function(anchor) {
-    this._createFrame();
-    let iframe = this.iframe;
-    if (iframe.getAttribute("src") == "about:providerdirectory")
-      return;
-    iframe.removeAttribute("origin");
-    iframe.parentNode.setAttribute("loading", "true");
-
-    iframe.setAttribute("src", "about:providerdirectory");
-    this._openPanel(anchor);
-  },
-
-  _openPanel: function(anchor) {
-    this._currentAnchor = anchor || this.anchor;
-    anchor = document.getAnonymousElementByAttribute(this._currentAnchor, "class", "toolbarbutton-icon");
-    this.panel.openPopup(anchor, "bottomcenter topright", 0, 0, false, false);
-    Services.telemetry.getHistogramById("SOCIAL_TOOLBAR_BUTTONS").add(0);
-  }
-};
-
-})();
diff --git a/browser/base/content/browser.css b/browser/base/content/browser.css
index f03f21c3f..ac5bf9e9b 100644
--- a/browser/base/content/browser.css
+++ b/browser/base/content/browser.css
@@ -933,11 +933,6 @@ html|*#gcli-output-frame,
   transition: none;
 }
 
-panelview > .social-panel-frame {
-  width: auto;
-  height: auto;
-}
-
 /* Translation */
 notification[value="translation"] {
   -moz-binding: url("chrome://browser/content/translation-infobar.xml#translationbar");
diff --git a/browser/base/content/browser.js b/browser/base/content/browser.js
index 8679bca83..4b8ec864b 100755
--- a/browser/base/content/browser.js
+++ b/browser/base/content/browser.js
@@ -44,7 +44,6 @@ Cu.import("resource://gre/modules/NotificationDB.jsm");
   ["ShortcutUtils", "resource://gre/modules/ShortcutUtils.jsm"],
   ["SimpleServiceDiscovery", "resource://gre/modules/SimpleServiceDiscovery.jsm"],
   ["SitePermissions", "resource:///modules/SitePermissions.jsm"],
-  ["Social", "resource:///modules/Social.jsm"],
   ["TabCrashHandler", "resource:///modules/ContentCrashHandlers.jsm"],
   ["Task", "resource://gre/modules/Task.jsm"],
   ["TelemetryStopwatch", "resource://gre/modules/TelemetryStopwatch.jsm"],
@@ -1405,8 +1404,6 @@ var gBrowserInit = {
       // Enable the Restore Last Session command if needed
       RestoreLastSessionObserver.init();
 
-      SocialUI.init();
-
       // Start monitoring slow add-ons
       AddonWatcher.init();
 
@@ -1537,7 +1534,6 @@ var gBrowserInit = {
 
       gPrefService.removeObserver(ctrlTab.prefName, ctrlTab);
       ctrlTab.uninit();
-      SocialUI.uninit();
       gBrowserThumbnails.uninit();
       FullZoom.destroy();
 
@@ -4297,9 +4293,7 @@ var XULBrowserWindow = {
 
   // Called before links are navigated to to allow us to retarget them if needed.
   onBeforeLinkTraversal: function(originalTarget, linkURI, linkNode, isAppTab) {
-    let target = BrowserUtils.onBeforeLinkTraversal(originalTarget, linkURI, linkNode, isAppTab);
-    SocialUI.closeSocialPanelForLinkTraversal(target, linkNode);
-    return target;
+    return BrowserUtils.onBeforeLinkTraversal(originalTarget, linkURI, linkNode, isAppTab);
   },
 
   // Check whether this URI should load in the current process
@@ -4480,8 +4474,6 @@ var XULBrowserWindow = {
 
       gIdentityHandler.onLocationChange();
 
-      SocialUI.updateState();
-
       UITour.onLocationChange(location);
 
       gTabletModePageCounter.inc();
diff --git a/browser/base/content/browser.xul b/browser/base/content/browser.xul
index 485471ee3..4f1b48349 100644
--- a/browser/base/content/browser.xul
+++ b/browser/base/content/browser.xul
@@ -268,27 +268,6 @@
       <box id="UITourHighlight"></box>
     </panel>
 
-    <panel id="social-share-panel"
-           class="social-panel"
-           type="arrow"
-           orient="vertical"
-           onpopupshowing="SocialShare.onShowing()"
-           onpopuphidden="SocialShare.onHidden()"
-           hidden="true">
-      <hbox class="social-share-toolbar">
-        <toolbarbutton id="manage-share-providers" class="share-provider-button"
-                       tooltiptext="&social.addons.label;"
-                       oncommand="BrowserOpenAddonsMgr('addons://list/service');
-                                  this.parentNode.parentNode.hidePopup();"/>
-        <arrowscrollbox id="social-share-provider-buttons" orient="horizontal" flex="1" pack="end">
-          <toolbarbutton id="add-share-provider" class="share-provider-button" type="radio"
-                         group="share-providers" tooltiptext="&findShareServices.label;"
-                         oncommand="SocialShare.showDirectory()"/>
-        </arrowscrollbox>
-      </hbox>
-      <hbox id="share-container" flex="1"/>
-    </panel>
-
     <menupopup id="toolbar-context-menu"
                onpopupshowing="onViewToolbarsPopupShowing(event, document.getElementById('viewToolbarsMenuSeparator'));">
       <menuitem oncommand="gCustomizeMode.addToPanel(document.popupNode)"
@@ -426,11 +405,6 @@
 #endif
     </tooltip>
 
-    <tooltip id="share-button-tooltip" onpopupshowing="SocialShare.createTooltip(event);">
-      <label class="tooltip-label"/>
-      <label class="tooltip-label"/>
-    </tooltip>
-
 #include popup-notifications.inc
 
 #include ../../components/customizableui/content/panelUI.inc.xul
diff --git a/browser/base/content/content.js b/browser/base/content/content.js
index 496e0d111..5758cb023 100644
--- a/browser/base/content/content.js
+++ b/browser/base/content/content.js
@@ -698,37 +698,6 @@ var PageMetadataMessenger = {
 }
 PageMetadataMessenger.init();
 
-addEventListener("ActivateSocialFeature", function (aEvent) {
-  let document = content.document;
-  let dwu = content.QueryInterface(Ci.nsIInterfaceRequestor)
-                   .getInterface(Ci.nsIDOMWindowUtils);
-  if (!dwu.isHandlingUserInput) {
-    Cu.reportError("attempt to activate provider without user input from " + document.nodePrincipal.origin);
-    return;
-  }
-
-  let node = aEvent.target;
-  let ownerDocument = node.ownerDocument;
-  let data = node.getAttribute("data-service");
-  if (data) {
-    try {
-      data = JSON.parse(data);
-    } catch (e) {
-      Cu.reportError("Social Service manifest parse error: " + e);
-      return;
-    }
-  } else {
-    Cu.reportError("Social Service manifest not available");
-    return;
-  }
-
-  sendAsyncMessage("Social:Activation", {
-    url: ownerDocument.location.href,
-    origin: ownerDocument.nodePrincipal.origin,
-    manifest: data
-  });
-}, true, true);
-
 addMessageListener("ContextMenu:SaveVideoFrameAsImage", (message) => {
   let video = message.objects.target;
   let canvas = content.document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
diff --git a/browser/base/content/global-scripts.inc b/browser/base/content/global-scripts.inc
index ca942cec8..eef21e15e 100755
--- a/browser/base/content/global-scripts.inc
+++ b/browser/base/content/global-scripts.inc
@@ -27,7 +27,6 @@
 <script type="application/javascript" src="chrome://browser/content/browser-safebrowsing.js"/>
 #endif
 <script type="application/javascript" src="chrome://browser/content/browser-sidebar.js"/>
-<script type="application/javascript" src="chrome://browser/content/browser-social.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-syncui.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-tabsintitlebar.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-thumbnails.js"/>
diff --git a/browser/base/content/nsContextMenu.js b/browser/base/content/nsContextMenu.js
index 955184f64..097caf367 100644
--- a/browser/base/content/nsContextMenu.js
+++ b/browser/base/content/nsContextMenu.js
@@ -174,15 +174,15 @@ nsContextMenu.prototype = {
   initNavigationItems: function CM_initNavigationItems() {
     var shouldShow = !(this.isContentSelected || this.onLink || this.onImage ||
                        this.onCanvas || this.onVideo || this.onAudio ||
-                       this.onTextInput || this.onSocial);
+                       this.onTextInput);
     this.showItem("context-navigation", shouldShow);
     this.showItem("context-sep-navigation", shouldShow);
 
     let stopped = XULBrowserWindow.stopCommand.getAttribute("disabled") == "true";
 
     let stopReloadItem = "";
-    if (shouldShow || this.onSocial) {
-      stopReloadItem = (stopped || this.onSocial) ? "reload" : "stop";
+    if (shouldShow) {
+      stopReloadItem = (stopped) ? "reload" : "stop";
     }
 
     this.showItem("context-reload", stopReloadItem == "reload");
@@ -249,7 +249,7 @@ nsContextMenu.prototype = {
                        this.onImage || this.onCanvas ||
                        this.onVideo || this.onAudio ||
                        this.onLink || this.onTextInput);
-    var showInspect = !this.onSocial && gPrefService.getBoolPref("devtools.inspector.enabled");
+    var showInspect = gPrefService.getBoolPref("devtools.inspector.enabled");
     this.showItem("context-viewsource", shouldShow);
     this.showItem("context-viewinfo", shouldShow);
     this.showItem("inspect-separator", showInspect);
@@ -306,12 +306,11 @@ nsContextMenu.prototype = {
     let bookmarkPage = document.getElementById("context-bookmarkpage");
     this.showItem(bookmarkPage,
                   !(this.isContentSelected || this.onTextInput || this.onLink ||
-                    this.onImage || this.onVideo || this.onAudio || this.onSocial ||
-                    this.onCanvas));
+                    this.onImage || this.onVideo || this.onAudio || this.onCanvas));
     bookmarkPage.setAttribute("tooltiptext", bookmarkPage.getAttribute("buttontooltiptext"));
 
-    this.showItem("context-bookmarklink", (this.onLink && !this.onMailtoLink &&
-                                           !this.onSocial) || this.onPlainTextLink);
+    this.showItem("context-bookmarklink", (this.onLink && !this.onMailtoLink) ||
+                                           this.onPlainTextLink);
     this.showItem("context-keywordfield",
                   this.onTextInput && this.onKeywordField);
     this.showItem("frame", this.inFrame);
@@ -349,19 +348,6 @@ nsContextMenu.prototype = {
                   this.onTextInput && !this.onNumeric && top.gBidiUI);
     this.showItem("context-bidi-page-direction-toggle",
                   !this.onTextInput && top.gBidiUI);
-
-    // SocialShare
-    let shareButton = SocialShare.shareButton;
-    let shareEnabled = shareButton && !shareButton.disabled && !this.onSocial;
-    let pageShare = shareEnabled && !(this.isContentSelected ||
-                            this.onTextInput || this.onLink || this.onImage ||
-                            this.onVideo || this.onAudio || this.onCanvas);
-    this.showItem("context-sharepage", pageShare);
-    this.showItem("context-shareselect", shareEnabled && this.isContentSelected);
-    this.showItem("context-sharelink", shareEnabled && (this.onLink || this.onPlainTextLink) && !this.onMailtoLink);
-    this.showItem("context-shareimage", shareEnabled && this.onImage);
-    this.showItem("context-sharevideo", shareEnabled && this.onVideo);
-    this.setItemAttr("context-sharevideo", "disabled", !this.mediaURL || this.mediaURL.startsWith("blob:"));
   },
 
   initSpellingItems: function() {
@@ -681,7 +667,6 @@ nsContextMenu.prototype = {
                                         .getInterface(Ci.nsIDOMWindowUtils)
                                         .outerWindowID;
     }
-    this.onSocial = !!this.browser.getAttribute("origin");
 
     // Check if we are in a synthetic document (stand alone image, video, etc.).
     this.inSyntheticDoc = ownerDoc.mozSyntheticDocument;
@@ -1726,22 +1711,6 @@ nsContextMenu.prototype = {
     mm.sendAsyncMessage("ContextMenu:BookmarkFrame", null, { target: this.target });
   },
 
-  shareLink: function CM_shareLink() {
-    SocialShare.sharePage(null, { url: this.linkURI.spec }, this.target);
-  },
-
-  shareImage: function CM_shareImage() {
-    SocialShare.sharePage(null, { url: this.imageURL, previews: [ this.mediaURL ] }, this.target);
-  },
-
-  shareVideo: function CM_shareVideo() {
-    SocialShare.sharePage(null, { url: this.mediaURL, source: this.mediaURL }, this.target);
-  },
-
-  shareSelect: function CM_shareSelect() {
-    SocialShare.sharePage(null, { url: this.browser.currentURI.spec, text: this.textSelected }, this.target);
-  },
-
   savePageAs: function CM_savePageAs() {
     saveBrowser(this.browser);
   },
@@ -1856,7 +1825,7 @@ nsContextMenu.prototype = {
   _getTelemetryPageContextInfo: function() {
     let rv = [];
     for (let k of ["isContentSelected", "onLink", "onImage", "onCanvas", "onVideo", "onAudio",
-                   "onTextInput", "onSocial"]) {
+                   "onTextInput"]) {
       if (this[k]) {
         rv.push(k.replace(/^(?:is|on)(.)/, (match, firstLetter) => firstLetter.toLowerCase()));
       }
diff --git a/browser/base/content/social-content.js b/browser/base/content/social-content.js
deleted file mode 100644
index b5fa6a5c4..000000000
--- a/browser/base/content/social-content.js
+++ /dev/null
@@ -1,172 +0,0 @@
-/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
-/* 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/. */
-
-/* This content script is intended for use by iframes in the share panel. */
-
-var {interfaces: Ci, utils: Cu} = Components;
-
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-
-// social frames are always treated as app tabs
-docShell.isAppTab = true;
-
-addEventListener("DOMContentLoaded", function(event) {
-  if (event.target != content.document)
-    return;
-  // Some share panels (e.g. twitter and facebook) check content.opener, and if
-  // it doesn't exist they act like they are in a browser tab.  We want them to
-  // act like they are in a dialog (which is the typical case).
-  if (content && !content.opener) {
-    content.opener = content;
-  }
-  hookWindowClose();
-  disableDialogs();
-});
-
-addMessageListener("Social:OpenGraphData", (message) => {
-  let ev = new content.CustomEvent("OpenGraphData", { detail: JSON.stringify(message.data) });
-  content.dispatchEvent(ev);
-});
-
-addMessageListener("Social:ClearFrame", () => {
-  docShell.createAboutBlankContentViewer(null);
-});
-
-addEventListener("DOMWindowClose", (evt) => {
-  // preventDefault stops the default window.close() function being called,
-  // which doesn't actually close anything but causes things to get into
-  // a bad state (an internal 'closed' flag is set and debug builds start
-  // asserting as the window is used.).
-  // None of the windows we inject this API into are suitable for this
-  // default close behaviour, so even if we took no action above, we avoid
-  // the default close from doing anything.
-  evt.preventDefault();
-
-  // Tells the SocialShare class to close the panel
-  sendAsyncMessage("Social:DOMWindowClose");
-});
-
-function hookWindowClose() {
-  // Allow scripts to close the "window".  Because we are in a panel and not
-  // in a full dialog, the DOMWindowClose listener above will only receive the
-  // event if we do this.
-  let dwu = content.QueryInterface(Ci.nsIInterfaceRequestor)
-     .getInterface(Ci.nsIDOMWindowUtils);
-  dwu.allowScriptsToClose();
-}
-
-function disableDialogs() {
-  let windowUtils = content.QueryInterface(Ci.nsIInterfaceRequestor).
-                    getInterface(Ci.nsIDOMWindowUtils);
-  windowUtils.disableDialogs();
-}
-
-// Error handling class used to listen for network errors in the social frames
-// and replace them with a social-specific error page
-const SocialErrorListener = {
-  QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMEventListener,
-                                         Ci.nsIWebProgressListener,
-                                         Ci.nsISupportsWeakReference,
-                                         Ci.nsISupports]),
-
-  defaultTemplate: "about:socialerror?mode=tryAgainOnly&url=%{url}&origin=%{origin}",
-  urlTemplate: null,
-
-  init() {
-    addMessageListener("Social:SetErrorURL", this);
-    let webProgress = docShell.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
-                              .getInterface(Components.interfaces.nsIWebProgress);
-    webProgress.addProgressListener(this, Ci.nsIWebProgress.NOTIFY_STATE_REQUEST |
-                                          Ci.nsIWebProgress.NOTIFY_LOCATION);
-  },
-
-  receiveMessage(message) {
-    switch (message.name) {
-      case "Social:SetErrorURL":
-        // Either a url or null to reset to default template.
-        this.urlTemplate = message.data.template;
-        break;
-    }
-  },
-
-  setErrorPage() {
-    // if this is about:providerdirectory, use the directory iframe
-    let frame = docShell.chromeEventHandler;
-    let origin = frame.getAttribute("origin");
-    let src = frame.getAttribute("src");
-    if (src == "about:providerdirectory") {
-      frame = content.document.getElementById("activation-frame");
-      src = frame.getAttribute("src");
-    }
-
-    let url = this.urlTemplate || this.defaultTemplate;
-    url = url.replace("%{url}", encodeURIComponent(src));
-    url = url.replace("%{origin}", encodeURIComponent(origin));
-    if (frame != docShell.chromeEventHandler) {
-      // Unable to access frame.docShell here. This is our own frame and doesn't
-      // provide reload, so we'll just set the src.
-      frame.setAttribute("src", url);
-    } else {
-      let webNav = docShell.QueryInterface(Ci.nsIWebNavigation);
-      webNav.loadURI(url, null, null, null, null);
-    }
-    sendAsyncMessage("Social:ErrorPageNotify", {
-        origin: origin,
-        url: src
-    });
-  },
-
-  onStateChange(aWebProgress, aRequest, aState, aStatus) {
-    let failure = false;
-    if ((aState & Ci.nsIWebProgressListener.STATE_IS_REQUEST))
-      return;
-    if ((aState & Ci.nsIWebProgressListener.STATE_STOP)) {
-      if (aRequest instanceof Ci.nsIHttpChannel) {
-        try {
-          // Change the frame to an error page on 4xx (client errors)
-          // and 5xx (server errors).  responseStatus throws if it is not set.
-          failure = aRequest.responseStatus >= 400 &&
-                    aRequest.responseStatus < 600;
-        } catch (e) {
-          failure = aStatus != Components.results.NS_OK;
-        }
-      }
-    }
-
-    // Calling cancel() will raise some OnStateChange notifications by itself,
-    // so avoid doing that more than once
-    if (failure && aStatus != Components.results.NS_BINDING_ABORTED) {
-      // if tp is enabled and we get a failure, ignore failures (ie. STATE_STOP)
-      // on child resources since they *may* have been blocked. We don't have an
-      // easy way to know if a particular url is blocked by TP, only that
-      // something was.
-      if (docShell.hasTrackingContentBlocked) {
-        let frame = docShell.chromeEventHandler;
-        let src = frame.getAttribute("src");
-        if (aRequest && aRequest.name != src) {
-          Cu.reportError("SocialErrorListener ignoring blocked content error for " + aRequest.name);
-          return;
-        }
-      }
-
-      aRequest.cancel(Components.results.NS_BINDING_ABORTED);
-      this.setErrorPage();
-    }
-  },
-
-  onLocationChange(aWebProgress, aRequest, aLocation, aFlags) {
-    if (aRequest && aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_ERROR_PAGE) {
-      aRequest.cancel(Components.results.NS_BINDING_ABORTED);
-      this.setErrorPage();
-    }
-  },
-
-  onProgressChange() {},
-  onStatusChange() {},
-  onSecurityChange() {},
-};
-
-SocialErrorListener.init();
diff --git a/browser/base/content/web-panels.xul b/browser/base/content/web-panels.xul
index 4693d878b..223b20ed7 100644
--- a/browser/base/content/web-panels.xul
+++ b/browser/base/content/web-panels.xul
@@ -23,7 +23,6 @@
   <script type="application/javascript" src="chrome://global/content/contentAreaUtils.js"/>
   <script type="application/javascript" src="chrome://browser/content/browser.js"/>
   <script type="application/javascript" src="chrome://browser/content/browser-places.js"/>
-  <script type="application/javascript" src="chrome://browser/content/browser-social.js"/>
   <script type="application/javascript" src="chrome://browser/content/browser-fxaccounts.js"/>
   <script type="application/javascript" src="chrome://browser/content/nsContextMenu.js"/>
   <script type="application/javascript" src="chrome://browser/content/web-panels.js"/>
diff --git a/browser/base/jar.mn b/browser/base/jar.mn
index 03854f75d..5ec92d79a 100644
--- a/browser/base/jar.mn
+++ b/browser/base/jar.mn
@@ -61,8 +61,6 @@ browser.jar:
 
         content/browser/aboutRobots-icon.png          (content/aboutRobots-icon.png)
         content/browser/aboutRobots-widget-left.png   (content/aboutRobots-widget-left.png)
-        content/browser/aboutSocialError.xhtml        (content/aboutSocialError.xhtml)
-        content/browser/aboutProviderDirectory.xhtml  (content/aboutProviderDirectory.xhtml)
         content/browser/aboutTabCrashed.css           (content/aboutTabCrashed.css)
         content/browser/aboutTabCrashed.js            (content/aboutTabCrashed.js)
         content/browser/aboutTabCrashed.xhtml         (content/aboutTabCrashed.xhtml)
@@ -88,7 +86,6 @@ browser.jar:
         content/browser/browser-safebrowsing.js       (content/browser-safebrowsing.js)
 #endif
         content/browser/browser-sidebar.js            (content/browser-sidebar.js)
-        content/browser/browser-social.js             (content/browser-social.js)
 *       content/browser/browser-syncui.js             (content/browser-syncui.js)
 *       content/browser/browser-tabPreviews.xml       (content/browser-tabPreviews.xml)
 #ifdef CAN_DRAW_IN_TITLEBAR
@@ -100,7 +97,6 @@ browser.jar:
         content/browser/browser-trackingprotection.js (content/browser-trackingprotection.js)
 *       content/browser/tab-content.js                (content/tab-content.js)
         content/browser/content.js                    (content/content.js)
-        content/browser/social-content.js             (content/social-content.js)
         content/browser/defaultthemes/1.footer.jpg    (content/defaultthemes/1.footer.jpg)
         content/browser/defaultthemes/1.header.jpg    (content/defaultthemes/1.header.jpg)
         content/browser/defaultthemes/1.icon.jpg      (content/defaultthemes/1.icon.jpg)
diff --git a/browser/components/about/AboutRedirector.cpp b/browser/components/about/AboutRedirector.cpp
index 5e8df6ab2..b77949ea7 100644
--- a/browser/components/about/AboutRedirector.cpp
+++ b/browser/components/about/AboutRedirector.cpp
@@ -56,16 +56,6 @@ static RedirEntry kRedirMap[] = {
     nsIAboutModule::ALLOW_SCRIPT |
     nsIAboutModule::HIDE_FROM_ABOUTABOUT
   },
-  {
-    "socialerror", "chrome://browser/content/aboutSocialError.xhtml",
-    nsIAboutModule::ALLOW_SCRIPT |
-    nsIAboutModule::HIDE_FROM_ABOUTABOUT
-  },
-  {
-    "providerdirectory", "chrome://browser/content/aboutProviderDirectory.xhtml",
-    nsIAboutModule::ALLOW_SCRIPT |
-    nsIAboutModule::HIDE_FROM_ABOUTABOUT
-  },
   {
     "tabcrashed", "chrome://browser/content/aboutTabCrashed.xhtml",
     nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
diff --git a/browser/components/build/nsModule.cpp b/browser/components/build/nsModule.cpp
index 967da3ebc..1baccd710 100644
--- a/browser/components/build/nsModule.cpp
+++ b/browser/components/build/nsModule.cpp
@@ -90,8 +90,6 @@ static const mozilla::Module::ContractIDEntry kBrowserContracts[] = {
     { NS_ABOUT_MODULE_CONTRACTID_PREFIX "blocked", &kNS_BROWSER_ABOUT_REDIRECTOR_CID },
 #endif
     { NS_ABOUT_MODULE_CONTRACTID_PREFIX "certerror", &kNS_BROWSER_ABOUT_REDIRECTOR_CID },
-    { NS_ABOUT_MODULE_CONTRACTID_PREFIX "socialerror", &kNS_BROWSER_ABOUT_REDIRECTOR_CID },
-    { NS_ABOUT_MODULE_CONTRACTID_PREFIX "providerdirectory", &kNS_BROWSER_ABOUT_REDIRECTOR_CID },
     { NS_ABOUT_MODULE_CONTRACTID_PREFIX "tabcrashed", &kNS_BROWSER_ABOUT_REDIRECTOR_CID },
     { NS_ABOUT_MODULE_CONTRACTID_PREFIX "feeds", &kNS_BROWSER_ABOUT_REDIRECTOR_CID },
     { NS_ABOUT_MODULE_CONTRACTID_PREFIX "privatebrowsing", &kNS_BROWSER_ABOUT_REDIRECTOR_CID },
diff --git a/browser/components/customizableui/CustomizableWidgets.jsm b/browser/components/customizableui/CustomizableWidgets.jsm
index 3e83b081c..3e00d385f 100644
--- a/browser/components/customizableui/CustomizableWidgets.jsm
+++ b/browser/components/customizableui/CustomizableWidgets.jsm
@@ -556,47 +556,6 @@ const CustomizableWidgets = [
       clearSubview(sidebarItems);
       fillSubviewFromMenuItems([...menu.children], sidebarItems);
     }
-  }, {
-    id: "social-share-button",
-    // custom build our button so we can attach to the share command
-    type: "custom",
-    onBuild: function(aDocument) {
-      let node = aDocument.createElementNS(kNSXUL, "toolbarbutton");
-      node.setAttribute("id", this.id);
-      node.classList.add("toolbarbutton-1");
-      node.classList.add("chromeclass-toolbar-additional");
-      node.setAttribute("label", CustomizableUI.getLocalizedProperty(this, "label"));
-      node.setAttribute("tooltiptext", CustomizableUI.getLocalizedProperty(this, "tooltiptext"));
-      node.setAttribute("removable", "true");
-      node.setAttribute("observes", "Social:PageShareable");
-      node.setAttribute("command", "Social:SharePage");
-
-      let listener = {
-        onWidgetAdded: (aWidgetId) => {
-          if (aWidgetId != this.id)
-            return;
-
-          Services.obs.notifyObservers(null, "social:" + this.id + "-added", null);
-        },
-
-        onWidgetRemoved: aWidgetId => {
-          if (aWidgetId != this.id)
-            return;
-
-          Services.obs.notifyObservers(null, "social:" + this.id + "-removed", null);
-        },
-
-        onWidgetInstanceRemoved: (aWidgetId, aDoc) => {
-          if (aWidgetId != this.id || aDoc != aDocument)
-            return;
-
-          CustomizableUI.removeListener(listener);
-        }
-      };
-      CustomizableUI.addListener(listener);
-
-      return node;
-    }
   }, {
     id: "add-ons-button",
     shortcutId: "key_openAddons",
diff --git a/browser/components/customizableui/content/panelUI.inc.xul b/browser/components/customizableui/content/panelUI.inc.xul
index 1b8fc0236..077d9c014 100644
--- a/browser/components/customizableui/content/panelUI.inc.xul
+++ b/browser/components/customizableui/content/panelUI.inc.xul
@@ -240,8 +240,6 @@
                      onclick="PanelUI.hide();"/>
     </panelview>
 
-    <panelview id="PanelUI-socialapi" flex="1"/>
-
     <panelview id="PanelUI-feeds" flex="1" oncommand="FeedHandler.subscribeToFeed(null, event);">
       <label value="&feedsMenu2.label;" class="panel-subview-header"/>
     </panelview>
diff --git a/browser/docs/UITelemetry.rst b/browser/docs/UITelemetry.rst
index 0b3302f8f..1a9213359 100644
--- a/browser/docs/UITelemetry.rst
+++ b/browser/docs/UITelemetry.rst
@@ -128,7 +128,6 @@ divide the following different context menu situations:
 - ``canvas`` if the user opened the context menu on a canvas (that isn't a link);
 - ``media`` if the user opened the context menu on an HTML video or audio element;
 - ``input`` if the user opened the context menu on a text input element;
-- ``social`` if the user opened the context menu inside a social frame;
 - ``other`` for all other openings of the content menu;
 
 Each of these objects (if they exist) then gets a "withcustom" and/or a "withoutcustom" property
diff --git a/browser/locales/en-US/chrome/browser/browser.dtd b/browser/locales/en-US/chrome/browser/browser.dtd
index 6de17b64f..1045977e8 100644
--- a/browser/locales/en-US/chrome/browser/browser.dtd
+++ b/browser/locales/en-US/chrome/browser/browser.dtd
@@ -163,22 +163,7 @@ These should match what Safari and other Apple applications use on OS X Lion. --
 <!ENTITY bookmarkThisPageCmd.label "Bookmark This Page">
 <!ENTITY editThisBookmarkCmd.label "Edit This Bookmark">
 <!ENTITY bookmarkThisPageCmd.commandkey "d">
-<!-- LOCALIZATION NOTE (findShareServices.label):
-  -  Use the unicode ellipsis char, \u2026,
-  -  or use "..." if \u2026 doesn't suit traditions in your locale. -->
-<!ENTITY findShareServices.label "Find more Share services…">
-<!ENTITY sharePageCmd.label "Share This Page">
-<!ENTITY sharePageCmd.commandkey "S">
-<!ENTITY sharePageCmd.accesskey "s">
-<!-- LOCALIZATION NOTE (shareLink.accesskey): must be different than the following share access keys -->
-<!ENTITY shareLink.label "Share This Link">
-<!ENTITY shareLink.accesskey "h">
-<!ENTITY shareImage.label "Share This Image">
-<!ENTITY shareImage.accesskey "r">
-<!ENTITY shareSelect.label "Share Selection">
-<!ENTITY shareSelect.accesskey "r">
-<!ENTITY shareVideo.label "Share This Video">
-<!ENTITY shareVideo.accesskey "r">
+
 <!ENTITY feedsMenu2.label "Subscribe to This Page">
 <!ENTITY subscribeToPageMenupopup.label "Subscribe to This Page">
 <!ENTITY subscribeToPageMenuitem.label "Subscribe to This Page…">
@@ -780,14 +765,6 @@ you can use these alternative items. Otherwise, their values should be empty.  -
 <!ENTITY syncReAuthItem.accesskey     "R">
 <!ENTITY syncToolbarButton.label      "Sync">
 
-<!ENTITY social.addons.label "Manage Services…">
-
-<!ENTITY social.directory.label "Activations Directory">
-<!ENTITY social.directory.text "You can activate Share services from the directory.">
-<!ENTITY social.directory.button "Take me there!">
-<!ENTITY social.directory.introText "Click on a service to add it to &brandShortName;.">
-<!ENTITY social.directory.viewmore.text "View More">
-
 <!ENTITY customizeMode.menuAndToolbars.header2 "Additional Tools and Features">
 <!ENTITY customizeMode.menuAndToolbars.empty "Want more tools?">
 <!ENTITY customizeMode.menuAndToolbars.emptyLink "Choose from thousands of add-ons">
diff --git a/browser/locales/en-US/chrome/browser/browser.properties b/browser/locales/en-US/chrome/browser/browser.properties
index f7f3e9339..46b8aabc7 100644
--- a/browser/locales/en-US/chrome/browser/browser.properties
+++ b/browser/locales/en-US/chrome/browser/browser.properties
@@ -453,29 +453,6 @@ processHang.button_debug.accessKey = D
 # LOCALIZATION NOTE (fullscreenButton.tooltip): %S is the keyboard shortcut for full screen
 fullscreenButton.tooltip=Display the window in full screen (%S)
 
-service.toolbarbutton.label=Services
-service.toolbarbutton.tooltiptext=Services
-
-# LOCALIZATION NOTE (social.install.description): %1$S is the hostname of the social provider, %2$S is brandShortName (e.g. Firefox)
-service.install.description=Would you like to enable services from %1$S to display in your %2$S toolbar and sidebar?
-service.install.ok.label=Enable Services
-service.install.ok.accesskey=E
-
-# LOCALIZATION NOTE (social.markpageMenu.label): %S is the name of the social provider
-social.markpageMenu.label=Save Page to %S
-# LOCALIZATION NOTE (social.marklinkMenu.label): %S is the name of the social provider
-social.marklinkMenu.label=Save Link to %S
-
-# LOCALIZATION NOTE (social.error.message): %1$S is brandShortName (e.g. Firefox), %2$S is the name of the social provider
-social.error.message=%1$S is unable to connect with %2$S right now.
-social.error.tryAgain.label=Try Again
-social.error.tryAgain.accesskey=T
-social.error.closeSidebar.label=Close This Sidebar
-social.error.closeSidebar.accesskey=C
-
-# LOCALIZATION NOTE: %1$S is the label for the toolbar button, %2$S is the associated badge numbering that the social provider may provide.
-social.aria.toolbarButtonBadgeText=%1$S (%2$S)
-
 # LOCALIZATION NOTE (getUserMedia.shareCamera.message, getUserMedia.shareMicrophone.message,
 #                    getUserMedia.shareScreen.message, getUserMedia.shareCameraAndMicrophone.message,
 #                    getUserMedia.shareScreenAndMicrophone.message, getUserMedia.shareCameraAndAudioCapture.message,
diff --git a/browser/locales/en-US/chrome/browser/customizableui/customizableWidgets.properties b/browser/locales/en-US/chrome/browser/customizableui/customizableWidgets.properties
index a68f59fe3..4574c6a81 100644
--- a/browser/locales/en-US/chrome/browser/customizableui/customizableWidgets.properties
+++ b/browser/locales/en-US/chrome/browser/customizableui/customizableWidgets.properties
@@ -95,9 +95,6 @@ quit-button.tooltiptext.linux2 = Quit %1$S (%2$S)
 # %2$S is the keyboard shortcut
 quit-button.tooltiptext.mac = Quit %1$S (%2$S)
 
-social-share-button.label = Share This Page
-social-share-button.tooltiptext = Share this page
-
 panic-button.label = Forget
 panic-button.tooltiptext = Forget about some browsing history
 
diff --git a/browser/modules/BrowserUITelemetry.jsm b/browser/modules/BrowserUITelemetry.jsm
index 392462b45..2ad319f1a 100644
--- a/browser/modules/BrowserUITelemetry.jsm
+++ b/browser/modules/BrowserUITelemetry.jsm
@@ -53,7 +53,6 @@ XPCOMUtils.defineLazyGetter(this, "DEFAULT_AREA_PLACEMENTS", function() {
       "pocket-button",
       "downloads-button",
       "home-button",
-      "social-share-button",
     ],
     // It's true that toolbar-menubar is not visible
     // on OS X, but the XUL node is definitely present
@@ -694,7 +693,7 @@ this.BrowserUITelemetry = {
     "spell-undo-add-to-dictionary", "openlinkincurrent", "openlinkintab",
     "openlink",
     // "openlinkprivate" intentionally omitted for privacy reasons. See bug 1176391.
-    "bookmarklink", "sharelink", "savelink",
+    "bookmarklink", "savelink",
     "marklinkMenu", "copyemail", "copylink", "media-play", "media-pause",
     "media-mute", "media-unmute", "media-playbackrate",
     "media-playbackrate-050x", "media-playbackrate-100x",
@@ -702,12 +701,12 @@ this.BrowserUITelemetry = {
     "media-showcontrols", "media-hidecontrols",
     "video-fullscreen", "leave-dom-fullscreen",
     "reloadimage", "viewimage", "viewvideo", "copyimage-contents", "copyimage",
-    "copyvideourl", "copyaudiourl", "saveimage", "shareimage", "sendimage",
+    "copyvideourl", "copyaudiourl", "saveimage", "sendimage",
     "setDesktopBackground", "viewimageinfo", "viewimagedesc", "savevideo",
-    "sharevideo", "saveaudio", "video-saveimage", "sendvideo", "sendaudio",
-    "ctp-play", "ctp-hide", "sharepage", "savepage", "pocket", "markpageMenu",
+    "saveaudio", "video-saveimage", "sendvideo", "sendaudio",
+    "ctp-play", "ctp-hide", "savepage", "pocket", "markpageMenu",
     "viewbgimage", "undo", "cut", "copy", "paste", "delete", "selectall",
-    "keywordfield", "searchselect", "shareselect", "frame", "showonlythisframe",
+    "keywordfield", "searchselect", "frame", "showonlythisframe",
     "openframeintab", "openframe", "reloadframe", "bookmarkframe", "saveframe",
     "printframe", "viewframesource", "viewframeinfo",
     "viewpartialsource-selection", "viewpartialsource-mathml",
diff --git a/browser/modules/Social.jsm b/browser/modules/Social.jsm
deleted file mode 100644
index 1569e0122..000000000
--- a/browser/modules/Social.jsm
+++ /dev/null
@@ -1,272 +0,0 @@
-/* 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/. */
-
-"use strict";
-
-this.EXPORTED_SYMBOLS = ["Social", "OpenGraphBuilder",
-                         "DynamicResizeWatcher", "sizeSocialPanelToContent"];
-
-const Ci = Components.interfaces;
-const Cc = Components.classes;
-const Cu = Components.utils;
-
-// The minimum sizes for the auto-resize panel code, minimum size necessary to
-// properly show the error page in the panel.
-const PANEL_MIN_HEIGHT = 190;
-const PANEL_MIN_WIDTH = 330;
-
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "CustomizableUI",
-  "resource:///modules/CustomizableUI.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "SocialService",
-  "resource:///modules/SocialService.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "PageMetadata",
-  "resource://gre/modules/PageMetadata.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
-  "resource://gre/modules/PlacesUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "Promise",
-  "resource://gre/modules/Promise.jsm");
-
-
-this.Social = {
-  initialized: false,
-  lastEventReceived: 0,
-  providers: [],
-  _disabledForSafeMode: false,
-
-  init: function Social_init() {
-    this._disabledForSafeMode = Services.appinfo.inSafeMode && this.enabled;
-    let deferred = Promise.defer();
-
-    if (this.initialized) {
-      deferred.resolve(true);
-      return deferred.promise;
-    }
-    this.initialized = true;
-    // if SocialService.hasEnabledProviders, retreive the providers so the
-    // front-end can generate UI
-    if (SocialService.hasEnabledProviders) {
-      // Retrieve the current set of providers, and set the current provider.
-      SocialService.getOrderedProviderList(function (providers) {
-        Social._updateProviderCache(providers);
-        Social._updateEnabledState(SocialService.enabled);
-        deferred.resolve(false);
-      });
-    } else {
-      deferred.resolve(false);
-    }
-
-    // Register an observer for changes to the provider list
-    SocialService.registerProviderListener(function providerListener(topic, origin, providers) {
-      // An engine change caused by adding/removing a provider should notify.
-      // any providers we receive are enabled in the AddonsManager
-      if (topic == "provider-installed" || topic == "provider-uninstalled") {
-        // installed/uninstalled do not send the providers param
-        Services.obs.notifyObservers(null, "social:" + topic, origin);
-        return;
-      }
-      if (topic == "provider-enabled") {
-        Social._updateProviderCache(providers);
-        Social._updateEnabledState(true);
-        Services.obs.notifyObservers(null, "social:" + topic, origin);
-        return;
-      }
-      if (topic == "provider-disabled") {
-        // a provider was removed from the list of providers, update states
-        Social._updateProviderCache(providers);
-        Social._updateEnabledState(providers.length > 0);
-        Services.obs.notifyObservers(null, "social:" + topic, origin);
-        return;
-      }
-      if (topic == "provider-update") {
-        // a provider has self-updated its manifest, we need to update our cache
-        // and reload the provider.
-        Social._updateProviderCache(providers);
-        let provider = Social._getProviderFromOrigin(origin);
-        provider.reload();
-      }
-    });
-    return deferred.promise;
-  },
-
-  _updateEnabledState: function(enable) {
-    for (let p of Social.providers) {
-      p.enabled = enable;
-    }
-  },
-
-  // Called to update our cache of providers and set the current provider
-  _updateProviderCache: function (providers) {
-    this.providers = providers;
-    Services.obs.notifyObservers(null, "social:providers-changed", null);
-  },
-
-  get enabled() {
-    return !this._disabledForSafeMode && this.providers.length > 0;
-  },
-
-  _getProviderFromOrigin: function (origin) {
-    for (let p of this.providers) {
-      if (p.origin == origin) {
-        return p;
-      }
-    }
-    return null;
-  },
-
-  getManifestByOrigin: function(origin) {
-    return SocialService.getManifestByOrigin(origin);
-  },
-
-  installProvider: function(data, installCallback, options={}) {
-    SocialService.installProvider(data, installCallback, options);
-  },
-
-  uninstallProvider: function(origin, aCallback) {
-    SocialService.uninstallProvider(origin, aCallback);
-  },
-
-  // Activation functionality
-  activateFromOrigin: function (origin, callback) {
-    // It's OK if the provider has already been activated - we still get called
-    // back with it.
-    SocialService.enableProvider(origin, callback);
-  }
-};
-
-function sizeSocialPanelToContent(panel, iframe, requestedSize) {
-  let doc = iframe.contentDocument;
-  if (!doc || !doc.body) {
-    return;
-  }
-  // We need an element to use for sizing our panel.  See if the body defines
-  // an id for that element, otherwise use the body itself.
-  let body = doc.body;
-  let docEl = doc.documentElement;
-  let bodyId = body.getAttribute("contentid");
-  if (bodyId) {
-    body = doc.getElementById(bodyId) || doc.body;
-  }
-  // offsetHeight/Width don't include margins, so account for that.
-  let cs = doc.defaultView.getComputedStyle(body);
-  let width = Math.max(PANEL_MIN_WIDTH, docEl.offsetWidth);
-  let height = Math.max(PANEL_MIN_HEIGHT, docEl.offsetHeight);
-  // if the panel is preloaded prior to being shown, cs will be null.  in that
-  // case use the minimum size for the panel until it is shown.
-  if (cs) {
-    let computedHeight = parseInt(cs.marginTop) + body.offsetHeight + parseInt(cs.marginBottom);
-    height = Math.max(computedHeight, height);
-    let computedWidth = parseInt(cs.marginLeft) + body.offsetWidth + parseInt(cs.marginRight);
-    width = Math.max(computedWidth, width);
-  }
-
-  // if our scrollHeight is still larger than the iframe, the css calculations
-  // above did not work for this site, increase the height. This can happen if
-  // the site increases its height for additional UI.
-  if (docEl.scrollHeight > iframe.boxObject.height)
-    height = docEl.scrollHeight;
-
-  // if a size was defined in the manifest use it as a minimum
-  if (requestedSize) {
-    if (requestedSize.height)
-      height = Math.max(height, requestedSize.height);
-    if (requestedSize.width)
-      width = Math.max(width, requestedSize.width);
-  }
-
-  // add the extra space used by the panel (toolbar, borders, etc) if the iframe
-  // has been loaded
-  if (iframe.boxObject.width && iframe.boxObject.height) {
-    // add extra space the panel needs if any
-    width += panel.boxObject.width - iframe.boxObject.width;
-    height += panel.boxObject.height - iframe.boxObject.height;
-  }
-
-  // using panel.sizeTo will ignore css transitions, set size via style
-  if (Math.abs(panel.boxObject.width - width) >= 2)
-    panel.style.width = width + "px";
-  if (Math.abs(panel.boxObject.height - height) >= 2)
-    panel.style.height = height + "px";
-}
-
-function DynamicResizeWatcher() {
-  this._mutationObserver = null;
-}
-
-DynamicResizeWatcher.prototype = {
-  start: function DynamicResizeWatcher_start(panel, iframe, requestedSize) {
-    this.stop(); // just in case...
-    let doc = iframe.contentDocument;
-    this._mutationObserver = new iframe.contentWindow.MutationObserver((mutations) => {
-      sizeSocialPanelToContent(panel, iframe, requestedSize);
-    });
-    // Observe anything that causes the size to change.
-    let config = {attributes: true, characterData: true, childList: true, subtree: true};
-    this._mutationObserver.observe(doc, config);
-    // and since this may be setup after the load event has fired we do an
-    // initial resize now.
-    sizeSocialPanelToContent(panel, iframe, requestedSize);
-  },
-  stop: function DynamicResizeWatcher_stop() {
-    if (this._mutationObserver) {
-      try {
-        this._mutationObserver.disconnect();
-      } catch (ex) {
-        // may get "TypeError: can't access dead object" which seems strange,
-        // but doesn't seem to indicate a real problem, so ignore it...
-      }
-      this._mutationObserver = null;
-    }
-  }
-}
-
-
-this.OpenGraphBuilder = {
-  generateEndpointURL: function(URLTemplate, pageData) {
-    // support for existing oexchange style endpoints by supporting their
-    // querystring arguments. parse the query string template and do
-    // replacements where necessary the query names may be different than ours,
-    // so we could see u=%{url} or url=%{url}
-    let [endpointURL, queryString] = URLTemplate.split("?");
-    let query = {};
-    if (queryString) {
-      queryString.split('&').forEach(function (val) {
-        let [name, value] = val.split('=');
-        let p = /%\{(.+)\}/.exec(value);
-        if (!p) {
-          // preserve non-template query vars
-          query[name] = value;
-        } else if (pageData[p[1]]) {
-          if (p[1] == "previews")
-            query[name] = pageData[p[1]][0];
-          else
-            query[name] = pageData[p[1]];
-        } else if (p[1] == "body") {
-          // build a body for emailers
-          let body = "";
-          if (pageData.title)
-            body += pageData.title + "\n\n";
-          if (pageData.description)
-            body += pageData.description + "\n\n";
-          if (pageData.text)
-            body += pageData.text + "\n\n";
-          body += pageData.url;
-          query["body"] = body;
-        }
-      });
-      // if the url template doesn't have title and no text was provided, add the title as the text.
-      if (!query.text && !query.title && pageData.title) {
-        query.text = pageData.title;
-      }
-    }
-    var str = [];
-    for (let p in query)
-       str.push(p + "=" + encodeURIComponent(query[p]));
-    if (str.length)
-      endpointURL = endpointURL + "?" + str.join("&");
-    return endpointURL;
-  },
-};
diff --git a/browser/modules/SocialService.jsm b/browser/modules/SocialService.jsm
deleted file mode 100644
index 95f5e0259..000000000
--- a/browser/modules/SocialService.jsm
+++ /dev/null
@@ -1,1097 +0,0 @@
-/* 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/. */
-
-this.EXPORTED_SYMBOLS = ["SocialService"];
-
-const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
-
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/AddonManager.jsm");
-Cu.import("resource://gre/modules/PlacesUtils.jsm");
-
-const URI_EXTENSION_STRINGS  = "chrome://mozapps/locale/extensions/extensions.properties";
-const ADDON_TYPE_SERVICE     = "service";
-const ID_SUFFIX              = "@services.mozilla.org";
-const STRING_TYPE_NAME       = "type.%ID%.name";
-
-XPCOMUtils.defineLazyModuleGetter(this, "DeferredTask", "resource://gre/modules/DeferredTask.jsm");
-
-XPCOMUtils.defineLazyServiceGetter(this, "etld",
-                                   "@mozilla.org/network/effective-tld-service;1",
-                                   "nsIEffectiveTLDService");
-
-/**
- * The SocialService is the public API to social providers - it tracks which
- * providers are installed and enabled, and is the entry-point for access to
- * the provider itself.
- */
-
-// Internal helper methods and state
-var SocialServiceInternal = {
-  get enabled() {
-    return this.providerArray.length > 0;
-  },
-
-  get providerArray() {
-    return Object.keys(this.providers).map(origin => this.providers[origin]);
-  },
-  *manifestsGenerator() {
-    // Retrieve the manifests of installed providers from prefs
-    let MANIFEST_PREFS = Services.prefs.getBranch("social.manifest.");
-    let prefs = MANIFEST_PREFS.getChildList("", []);
-    for (let pref of prefs) {
-      // we only consider manifests in user level prefs to be *installed*
-      if (!MANIFEST_PREFS.prefHasUserValue(pref))
-        continue;
-      try {
-        var manifest = JSON.parse(MANIFEST_PREFS.getComplexValue(pref, Ci.nsISupportsString).data);
-        if (manifest && typeof(manifest) == "object" && manifest.origin)
-          yield manifest;
-      } catch (err) {
-        Cu.reportError("SocialService: failed to load manifest: " + pref +
-                       ", exception: " + err);
-      }
-    }
-  },
-  get manifests() {
-    return this.manifestsGenerator();
-  },
-  getManifestPrefname: function(origin) {
-    // Retrieve the prefname for a given origin/manifest.
-    // If no existing pref, return a generated prefname.
-    let MANIFEST_PREFS = Services.prefs.getBranch("social.manifest.");
-    let prefs = MANIFEST_PREFS.getChildList("", []);
-    for (let pref of prefs) {
-      try {
-        var manifest = JSON.parse(MANIFEST_PREFS.getComplexValue(pref, Ci.nsISupportsString).data);
-        if (manifest.origin == origin) {
-          return pref;
-        }
-      } catch (err) {
-        Cu.reportError("SocialService: failed to load manifest: " + pref +
-                       ", exception: " + err);
-      }
-    }
-    let originUri = Services.io.newURI(origin, null, null);
-    return originUri.hostPort.replace('.', '-');
-  },
-  orderedProviders: function(aCallback) {
-    if (SocialServiceInternal.providerArray.length < 2) {
-      schedule(function () {
-        aCallback(SocialServiceInternal.providerArray);
-      });
-      return;
-    }
-    // query moz_hosts for frecency.  since some providers may not have a
-    // frecency entry, we need to later sort on our own. We use the providers
-    // object below as an easy way to later record the frecency on the provider
-    // object from the query results.
-    let hosts = [];
-    let providers = {};
-
-    for (let p of SocialServiceInternal.providerArray) {
-      p.frecency = 0;
-      providers[p.domain] = p;
-      hosts.push(p.domain);
-    }
-
-    // cannot bind an array to stmt.params so we have to build the string
-    let stmt = PlacesUtils.history.QueryInterface(Ci.nsPIPlacesDatabase)
-                                 .DBConnection.createAsyncStatement(
-      "SELECT host, frecency FROM moz_hosts WHERE host IN (" +
-      hosts.map(host => '"' + host + '"').join(",") + ") "
-    );
-
-    try {
-      stmt.executeAsync({
-        handleResult: function(aResultSet) {
-          let row;
-          while ((row = aResultSet.getNextRow())) {
-            let rh = row.getResultByName("host");
-            let frecency = row.getResultByName("frecency");
-            providers[rh].frecency = parseInt(frecency) || 0;
-          }
-        },
-        handleError: function(aError) {
-          Cu.reportError(aError.message + " (Result = " + aError.result + ")");
-        },
-        handleCompletion: function(aReason) {
-          // the query may not have returned all our providers, so we have
-          // stamped the frecency on the provider and sort here. This makes sure
-          // all enabled providers get sorted even with frecency zero.
-          let providerList = SocialServiceInternal.providerArray;
-          // reverse sort
-          aCallback(providerList.sort((a, b) => b.frecency - a.frecency));
-        }
-      });
-    } finally {
-      stmt.finalize();
-    }
-  }
-};
-
-XPCOMUtils.defineLazyGetter(SocialServiceInternal, "providers", function () {
-  initService();
-  let providers = {};
-  for (let manifest of this.manifests) {
-    try {
-      if (ActiveProviders.has(manifest.origin)) {
-        // enable the api when a provider is enabled
-        let provider = new SocialProvider(manifest);
-        providers[provider.origin] = provider;
-      }
-    } catch (err) {
-      Cu.reportError("SocialService: failed to load provider: " + manifest.origin +
-                     ", exception: " + err);
-    }
-  }
-  return providers;
-});
-
-function getOriginActivationType(origin) {
-  // if this is an about uri, treat it as a directory
-  let URI = Services.io.newURI(origin, null, null);
-  let principal = Services.scriptSecurityManager.createCodebasePrincipal(URI, {});
-  if (Services.scriptSecurityManager.isSystemPrincipal(principal) || origin == "moz-safe-about:home") {
-    return "internal";
-  }
-
-  let directories = Services.prefs.getCharPref("social.directories").split(',');
-  if (directories.indexOf(origin) >= 0)
-    return "directory";
-
-  return "foreign";
-}
-
-var ActiveProviders = {
-  get _providers() {
-    delete this._providers;
-    this._providers = {};
-    try {
-      let pref = Services.prefs.getComplexValue("social.activeProviders",
-                                                Ci.nsISupportsString);
-      this._providers = JSON.parse(pref);
-    } catch (ex) {}
-    return this._providers;
-  },
-
-  has: function (origin) {
-    return (origin in this._providers);
-  },
-
-  add: function (origin) {
-    this._providers[origin] = 1;
-    this._deferredTask.arm();
-  },
-
-  delete: function (origin) {
-    delete this._providers[origin];
-    this._deferredTask.arm();
-  },
-
-  flush: function () {
-    this._deferredTask.disarm();
-    this._persist();
-  },
-
-  get _deferredTask() {
-    delete this._deferredTask;
-    return this._deferredTask = new DeferredTask(this._persist.bind(this), 0);
-  },
-
-  _persist: function () {
-    let string = Cc["@mozilla.org/supports-string;1"].
-                 createInstance(Ci.nsISupportsString);
-    string.data = JSON.stringify(this._providers);
-    Services.prefs.setComplexValue("social.activeProviders",
-                                   Ci.nsISupportsString, string);
-  }
-};
-
-function migrateSettings() {
-  let activeProviders, enabled;
-  try {
-    activeProviders = Services.prefs.getCharPref("social.activeProviders");
-  } catch (e) {
-    // not set, we'll check if we need to migrate older prefs
-  }
-  if (Services.prefs.prefHasUserValue("social.enabled")) {
-    enabled = Services.prefs.getBoolPref("social.enabled");
-  }
-  if (activeProviders) {
-    // migration from fx21 to fx22 or later
-    // ensure any *builtin* provider in activeproviders is in user level prefs
-    for (let origin in ActiveProviders._providers) {
-      let prefname;
-      let manifest;
-      let defaultManifest;
-      try {
-        prefname = getPrefnameFromOrigin(origin);
-        manifest = JSON.parse(Services.prefs.getComplexValue(prefname, Ci.nsISupportsString).data);
-      } catch (e) {
-        // Our preference is missing or bad, remove from ActiveProviders and
-        // continue. This is primarily an error-case and should only be
-        // reached by either messing with preferences or hitting the one or
-        // two days of nightly that ran into it, so we'll flush right away.
-        ActiveProviders.delete(origin);
-        ActiveProviders.flush();
-        continue;
-      }
-      let needsUpdate = !manifest.updateDate;
-      // fx23 may have built-ins with shareURL
-      try {
-        defaultManifest = Services.prefs.getDefaultBranch(null)
-                        .getComplexValue(prefname, Ci.nsISupportsString).data;
-        defaultManifest = JSON.parse(defaultManifest);
-      } catch (e) {
-        // not a built-in, continue
-      }
-      if (defaultManifest) {
-        if (defaultManifest.shareURL && !manifest.shareURL) {
-          manifest.shareURL = defaultManifest.shareURL;
-          needsUpdate = true;
-        }
-        if (defaultManifest.version && (!manifest.version || defaultManifest.version > manifest.version)) {
-          manifest = defaultManifest;
-          needsUpdate = true;
-        }
-      }
-      if (needsUpdate) {
-        // the provider was installed with an older build, so we will update the
-        // timestamp and ensure the manifest is in user prefs
-        delete manifest.builtin;
-        // we're potentially updating for share, so always mark the updateDate
-        manifest.updateDate = Date.now();
-        if (!manifest.installDate)
-          manifest.installDate = 0; // we don't know when it was installed
-
-        let string = Cc["@mozilla.org/supports-string;1"].
-                     createInstance(Ci.nsISupportsString);
-        string.data = JSON.stringify(manifest);
-        Services.prefs.setComplexValue(prefname, Ci.nsISupportsString, string);
-      }
-      // as of fx 29, we no longer rely on social.enabled. migration from prior
-      // versions should disable all service addons if social.enabled=false
-      if (enabled === false) {
-        ActiveProviders.delete(origin);
-      }
-    }
-    ActiveProviders.flush();
-    Services.prefs.clearUserPref("social.enabled");
-    return;
-  }
-
-  // primary migration from pre-fx21
-  let active;
-  try {
-    active = Services.prefs.getBoolPref("social.active");
-  } catch (e) {}
-  if (!active)
-    return;
-
-  // primary difference from SocialServiceInternal.manifests is that we
-  // only read the default branch here.
-  let manifestPrefs = Services.prefs.getDefaultBranch("social.manifest.");
-  let prefs = manifestPrefs.getChildList("", []);
-  for (let pref of prefs) {
-    try {
-      let manifest;
-      try {
-        manifest = JSON.parse(manifestPrefs.getComplexValue(pref, Ci.nsISupportsString).data);
-      } catch (e) {
-        // bad or missing preference, we wont update this one.
-        continue;
-      }
-      if (manifest && typeof(manifest) == "object" && manifest.origin) {
-        // our default manifests have been updated with the builtin flags as of
-        // fx22, delete it so we can set the user-pref
-        delete manifest.builtin;
-        if (!manifest.updateDate) {
-          manifest.updateDate = Date.now();
-          manifest.installDate = 0; // we don't know when it was installed
-        }
-
-        let string = Cc["@mozilla.org/supports-string;1"].createInstance(Ci.nsISupportsString);
-        string.data = JSON.stringify(manifest);
-        // pref here is just the branch name, set the full pref name
-        Services.prefs.setComplexValue("social.manifest." + pref, Ci.nsISupportsString, string);
-        ActiveProviders.add(manifest.origin);
-        ActiveProviders.flush();
-        // social.active was used at a time that there was only one
-        // builtin, we'll assume that is still the case
-        return;
-      }
-    } catch (err) {
-      Cu.reportError("SocialService: failed to load manifest: " + pref + ", exception: " + err);
-    }
-  }
-}
-
-function initService() {
-  Services.obs.addObserver(function xpcomShutdown() {
-    ActiveProviders.flush();
-    SocialService._providerListeners = null;
-    Services.obs.removeObserver(xpcomShutdown, "xpcom-shutdown");
-  }, "xpcom-shutdown", false);
-
-  try {
-    migrateSettings();
-  } catch (e) {
-    // no matter what, if migration fails we do not want to render social
-    // unusable. Worst case scenario is that, when upgrading Firefox, previously
-    // enabled providers are not migrated.
-    Cu.reportError("Error migrating social settings: " + e);
-  }
-}
-
-function schedule(callback) {
-  Services.tm.mainThread.dispatch(callback, Ci.nsIThread.DISPATCH_NORMAL);
-}
-
-// Public API
-this.SocialService = {
-  get hasEnabledProviders() {
-    // used as an optimization during startup, can be used to check if further
-    // initialization should be done (e.g. creating the instances of
-    // SocialProvider and turning on UI). ActiveProviders may have changed and
-    // not yet flushed so we check the active providers array
-    for (let p in ActiveProviders._providers) {
-      return true;
-    }
-    return false;
-  },
-  get enabled() {
-    return SocialServiceInternal.enabled;
-  },
-  set enabled(val) {
-    throw new Error("not allowed to set SocialService.enabled");
-  },
-
-  // Enables a provider, the manifest must already exist in prefs. The provider
-  // may or may not have previously been added. onDone is always called
-  // - with null if no such provider exists, or the activated provider on
-  // success.
-  enableProvider: function enableProvider(origin, onDone) {
-    if (SocialServiceInternal.providers[origin]) {
-      schedule(function() {
-        onDone(SocialServiceInternal.providers[origin]);
-      });
-      return;
-    }
-    let manifest = SocialService.getManifestByOrigin(origin);
-    if (manifest) {
-      let addon = new AddonWrapper(manifest);
-      AddonManagerPrivate.callAddonListeners("onEnabling", addon, false);
-      addon.pendingOperations |= AddonManager.PENDING_ENABLE;
-      this.addProvider(manifest, onDone);
-      addon.pendingOperations -= AddonManager.PENDING_ENABLE;
-      AddonManagerPrivate.callAddonListeners("onEnabled", addon);
-      return;
-    }
-    schedule(function() {
-      onDone(null);
-    });
-  },
-
-  // Adds a provider given a manifest, and returns the added provider.
-  addProvider: function addProvider(manifest, onDone) {
-    if (SocialServiceInternal.providers[manifest.origin])
-      throw new Error("SocialService.addProvider: provider with this origin already exists");
-
-    // enable the api when a provider is enabled
-    let provider = new SocialProvider(manifest);
-    SocialServiceInternal.providers[provider.origin] = provider;
-    ActiveProviders.add(provider.origin);
-
-    this.getOrderedProviderList(function (providers) {
-      this._notifyProviderListeners("provider-enabled", provider.origin, providers);
-      if (onDone)
-        onDone(provider);
-    }.bind(this));
-  },
-
-  // Removes a provider with the given origin, and notifies when the removal is
-  // complete.
-  disableProvider: function disableProvider(origin, onDone) {
-    if (!(origin in SocialServiceInternal.providers))
-      throw new Error("SocialService.disableProvider: no provider with origin " + origin + " exists!");
-
-    let provider = SocialServiceInternal.providers[origin];
-    let manifest = SocialService.getManifestByOrigin(origin);
-    let addon = manifest && new AddonWrapper(manifest);
-    if (addon) {
-      AddonManagerPrivate.callAddonListeners("onDisabling", addon, false);
-      addon.pendingOperations |= AddonManager.PENDING_DISABLE;
-    }
-    provider.enabled = false;
-
-    ActiveProviders.delete(provider.origin);
-
-    delete SocialServiceInternal.providers[origin];
-
-    if (addon) {
-      // we have to do this now so the addon manager ui will update an uninstall
-      // correctly.
-      addon.pendingOperations -= AddonManager.PENDING_DISABLE;
-      AddonManagerPrivate.callAddonListeners("onDisabled", addon);
-    }
-
-    this.getOrderedProviderList(function (providers) {
-      this._notifyProviderListeners("provider-disabled", origin, providers);
-      if (onDone)
-        onDone();
-    }.bind(this));
-  },
-
-  // Returns a single provider object with the specified origin.  The provider
-  // must be "installed" (ie, in ActiveProviders)
-  getProvider: function getProvider(origin, onDone) {
-    schedule((function () {
-      onDone(SocialServiceInternal.providers[origin] || null);
-    }).bind(this));
-  },
-
-  // Returns an unordered array of installed providers
-  getProviderList: function(onDone) {
-    schedule(function () {
-      onDone(SocialServiceInternal.providerArray);
-    });
-  },
-
-  getManifestByOrigin: function(origin) {
-    for (let manifest of SocialServiceInternal.manifests) {
-      if (origin == manifest.origin) {
-        return manifest;
-      }
-    }
-    return null;
-  },
-
-  // Returns an array of installed providers, sorted by frecency
-  getOrderedProviderList: function(onDone) {
-    SocialServiceInternal.orderedProviders(onDone);
-  },
-
-  getOriginActivationType: function (origin) {
-    return getOriginActivationType(origin);
-  },
-
-  _providerListeners: new Map(),
-  registerProviderListener: function registerProviderListener(listener) {
-    this._providerListeners.set(listener, 1);
-  },
-  unregisterProviderListener: function unregisterProviderListener(listener) {
-    this._providerListeners.delete(listener);
-  },
-
-  _notifyProviderListeners: function (topic, origin, providers) {
-    for (let [listener, ] of this._providerListeners) {
-      try {
-        listener(topic, origin, providers);
-      } catch (ex) {
-        Components.utils.reportError("SocialService: provider listener threw an exception: " + ex);
-      }
-    }
-  },
-
-  _manifestFromData: function(type, data, installOrigin) {
-    let featureURLs = ['shareURL'];
-    let resolveURLs = featureURLs.concat(['postActivationURL']);
-
-    if (type == 'directory' || type == 'internal') {
-      // directory provided manifests must have origin in manifest, use that
-      if (!data['origin']) {
-        Cu.reportError("SocialService.manifestFromData directory service provided manifest without origin.");
-        return null;
-      }
-      installOrigin = data.origin;
-    }
-    // force/fixup origin
-    let URI = Services.io.newURI(installOrigin, null, null);
-    let principal = Services.scriptSecurityManager.createCodebasePrincipal(URI, {});
-    data.origin = principal.origin;
-
-    // iconURL and name are required
-    let providerHasFeatures = featureURLs.some(url => data[url]);
-    if (!providerHasFeatures) {
-      Cu.reportError("SocialService.manifestFromData manifest missing required urls.");
-      return null;
-    }
-    if (!data['name'] || !data['iconURL']) {
-      Cu.reportError("SocialService.manifestFromData manifest missing name or iconURL.");
-      return null;
-    }
-    for (let url of resolveURLs) {
-      if (data[url]) {
-        try {
-          let resolved = Services.io.newURI(principal.URI.resolve(data[url]), null, null);
-          if (!(resolved.schemeIs("http") || resolved.schemeIs("https"))) {
-            Cu.reportError("SocialService.manifestFromData unsupported scheme '" + resolved.scheme + "' for " + principal.origin);
-            return null;
-          }
-          data[url] = resolved.spec;
-        } catch (e) {
-          Cu.reportError("SocialService.manifestFromData unable to resolve '" + url + "' for " + principal.origin);
-          return null;
-        }
-      }
-    }
-    return data;
-  },
-
-  _showInstallNotification: function(data, aAddonInstaller) {
-    let brandBundle = Services.strings.createBundle("chrome://branding/locale/brand.properties");
-    let browserBundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
-
-    // internal/directory activations need to use the manifest origin, any other
-    // use the domain activation is occurring on
-    let url = data.url;
-    if (data.installType == "internal" || data.installType == "directory") {
-      url = data.manifest.origin;
-    }
-    let requestingURI =  Services.io.newURI(url, null, null);
-    let productName = brandBundle.GetStringFromName("brandShortName");
-
-    let message = browserBundle.formatStringFromName("service.install.description",
-                                                     [requestingURI.host, productName], 2);
-
-    let action = {
-      label: browserBundle.GetStringFromName("service.install.ok.label"),
-      accessKey: browserBundle.GetStringFromName("service.install.ok.accesskey"),
-      callback: function() {
-        aAddonInstaller.install();
-      },
-    };
-
-    let options = {
-                    learnMoreURL: Services.urlFormatter.formatURLPref("app.support.baseURL") + "social-api",
-                  };
-    let anchor = "servicesInstall-notification-icon";
-    let notificationid = "servicesInstall";
-    data.window.PopupNotifications.show(data.window.gBrowser.selectedBrowser,
-                                        notificationid, message, anchor,
-                                        action, [], options);
-  },
-
-  installProvider: function(data, installCallback, options={}) {
-    data.installType = getOriginActivationType(data.origin);
-    // if we get data, we MUST have a valid manifest generated from the data
-    let manifest = this._manifestFromData(data.installType, data.manifest, data.origin);
-    if (!manifest)
-      throw new Error("SocialService.installProvider: service configuration is invalid from " + data.url);
-
-    let addon = new AddonWrapper(manifest);
-    if (addon && addon.blocklistState == Ci.nsIBlocklistService.STATE_BLOCKED)
-      throw new Error("installProvider: provider with origin [" +
-                      data.origin + "] is blocklisted");
-    // manifestFromData call above will enforce correct origin. To support
-    // activation from about: uris, we need to be sure to use the updated
-    // origin on the manifest.
-    data.manifest = manifest;
-    let id = getAddonIDFromOrigin(manifest.origin);
-    AddonManager.getAddonByID(id, function(aAddon) {
-      if (aAddon && aAddon.userDisabled) {
-        aAddon.cancelUninstall();
-        aAddon.userDisabled = false;
-      }
-      schedule(function () {
-        try {
-          this._installProvider(data, options, aManifest => {
-              this._notifyProviderListeners("provider-installed", aManifest.origin);
-              installCallback(aManifest);
-          });
-        } catch (e) {
-          Cu.reportError("Activation failed: " + e);
-          installCallback(null);
-        }
-      }.bind(this));
-    }.bind(this));
-  },
-
-  _installProvider: function(data, options, installCallback) {
-    if (!data.manifest)
-      throw new Error("Cannot install provider without manifest data");
-
-    if (data.installType == "foreign" && !Services.prefs.getBoolPref("social.remote-install.enabled"))
-      throw new Error("Remote install of services is disabled");
-
-    // if installing from any website, the install must happen over https.
-    // "internal" are installs from about:home or similar
-    if (data.installType != "internal" && !Services.io.newURI(data.origin, null, null).schemeIs("https")) {
-      throw new Error("attempt to activate provider over unsecured channel: " + data.origin);
-    }
-
-    let installer = new AddonInstaller(data.url, data.manifest, installCallback);
-    let bypassPanel = options.bypassInstallPanel ||
-                      (data.installType == "internal" && data.manifest.oneclick);
-    if (bypassPanel)
-      installer.install();
-    else
-      this._showInstallNotification(data, installer);
-  },
-
-  createWrapper: function(manifest) {
-    return new AddonWrapper(manifest);
-  },
-
-  /**
-   * updateProvider is used from the worker to self-update.  Since we do not
-   * have knowledge of the currently selected provider here, we will notify
-   * the front end to deal with any reload.
-   */
-  updateProvider: function(aUpdateOrigin, aManifest) {
-    let installType = this.getOriginActivationType(aUpdateOrigin);
-    // if we get data, we MUST have a valid manifest generated from the data
-    let manifest = this._manifestFromData(installType, aManifest, aUpdateOrigin);
-    if (!manifest)
-      throw new Error("SocialService.installProvider: service configuration is invalid from " + aUpdateOrigin);
-
-    // overwrite the preference
-    let string = Cc["@mozilla.org/supports-string;1"].
-                 createInstance(Ci.nsISupportsString);
-    string.data = JSON.stringify(manifest);
-    Services.prefs.setComplexValue(getPrefnameFromOrigin(manifest.origin), Ci.nsISupportsString, string);
-
-    // overwrite the existing provider then notify the front end so it can
-    // handle any reload that might be necessary.
-    if (ActiveProviders.has(manifest.origin)) {
-      let provider = SocialServiceInternal.providers[manifest.origin];
-      provider.enabled = false;
-      provider = new SocialProvider(manifest);
-      SocialServiceInternal.providers[provider.origin] = provider;
-      // update the cache and ui, reload provider if necessary
-      this.getOrderedProviderList(providers => {
-        this._notifyProviderListeners("provider-update", provider.origin, providers);
-      });
-    }
-
-  },
-
-  uninstallProvider: function(origin, aCallback) {
-    let manifest = SocialService.getManifestByOrigin(origin);
-    let addon = new AddonWrapper(manifest);
-    addon.uninstall(aCallback);
-  }
-};
-
-/**
- * The SocialProvider object represents a social provider.
- *
- * @constructor
- * @param {jsobj} object representing the manifest file describing this provider
- * @param {bool} boolean indicating whether this provider is "built in"
- */
-function SocialProvider(input) {
-  if (!input.name)
-    throw new Error("SocialProvider must be passed a name");
-  if (!input.origin)
-    throw new Error("SocialProvider must be passed an origin");
-
-  let addon = new AddonWrapper(input);
-  if (addon.blocklistState == Ci.nsIBlocklistService.STATE_BLOCKED)
-    throw new Error("SocialProvider: provider with origin [" +
-                    input.origin + "] is blocklisted");
-
-  this.name = input.name;
-  this.iconURL = input.iconURL;
-  this.icon32URL = input.icon32URL;
-  this.icon64URL = input.icon64URL;
-  this.shareURL = input.shareURL;
-  this.postActivationURL = input.postActivationURL;
-  this.origin = input.origin;
-  let originUri = Services.io.newURI(input.origin, null, null);
-  this.principal = Services.scriptSecurityManager.createCodebasePrincipal(originUri, {});
-  this.ambientNotificationIcons = {};
-  this.errorState = null;
-  this.frecency = 0;
-
-  try {
-    this.domain = etld.getBaseDomainFromHost(originUri.host);
-  } catch (e) {
-    this.domain = originUri.host;
-  }
-}
-
-SocialProvider.prototype = {
-  reload: function() {
-    // calling terminate/activate does not set the enabled state whereas setting
-    // enabled will call terminate/activate
-    this.enabled = false;
-    this.enabled = true;
-    Services.obs.notifyObservers(null, "social:provider-reload", this.origin);
-  },
-
-  // Provider enabled/disabled state.
-  _enabled: false,
-  get enabled() {
-    return this._enabled;
-  },
-  set enabled(val) {
-    let enable = !!val;
-    if (enable == this._enabled)
-      return;
-
-    this._enabled = enable;
-
-    if (enable) {
-      this._activate();
-    } else {
-      this._terminate();
-    }
-  },
-
-  get manifest() {
-    return SocialService.getManifestByOrigin(this.origin);
-  },
-
-  getPageSize: function(name) {
-    let manifest = this.manifest;
-    if (manifest && manifest.pageSize)
-      return manifest.pageSize[name];
-    return undefined;
-  },
-
-  // Internal helper methods
-  _activate: function _activate() {
-  },
-
-  _terminate: function _terminate() {
-    this.errorState = null;
-  },
-
-  /**
-   * Checks if a given URI is of the same origin as the provider.
-   *
-   * Returns true or false.
-   *
-   * @param {URI or string} uri
-   */
-  isSameOrigin: function isSameOrigin(uri, allowIfInheritsPrincipal) {
-    if (!uri)
-      return false;
-    if (typeof uri == "string") {
-      try {
-        uri = Services.io.newURI(uri, null, null);
-      } catch (ex) {
-        // an invalid URL can't be loaded!
-        return false;
-      }
-    }
-    try {
-      this.principal.checkMayLoad(
-        uri, // the thing to check.
-        false, // reportError - we do our own reporting when necessary.
-        allowIfInheritsPrincipal
-      );
-      return true;
-    } catch (ex) {
-      return false;
-    }
-  },
-
-  /**
-   * Resolve partial URLs for a provider.
-   *
-   * Returns nsIURI object or null on failure
-   *
-   * @param {string} url
-   */
-  resolveUri: function resolveUri(url) {
-    try {
-      let fullURL = this.principal.URI.resolve(url);
-      return Services.io.newURI(fullURL, null, null);
-    } catch (ex) {
-      Cu.reportError("mozSocial: failed to resolve window URL: " + url + "; " + ex);
-      return null;
-    }
-  }
-};
-
-function getAddonIDFromOrigin(origin) {
-  let originUri = Services.io.newURI(origin, null, null);
-  return originUri.host + ID_SUFFIX;
-}
-
-function getPrefnameFromOrigin(origin) {
-  return "social.manifest." + SocialServiceInternal.getManifestPrefname(origin);
-}
-
-function AddonInstaller(sourceURI, aManifest, installCallback) {
-  aManifest.updateDate = Date.now();
-  // get the existing manifest for installDate
-  let manifest = SocialService.getManifestByOrigin(aManifest.origin);
-  let isNewInstall = !manifest;
-  if (manifest && manifest.installDate)
-    aManifest.installDate = manifest.installDate;
-  else
-    aManifest.installDate = aManifest.updateDate;
-
-  this.sourceURI = sourceURI;
-  this.install = function() {
-    let addon = this.addon;
-    if (isNewInstall) {
-      AddonManagerPrivate.callInstallListeners("onExternalInstall", null, addon, null, false);
-      AddonManagerPrivate.callAddonListeners("onInstalling", addon, false);
-    }
-
-    let string = Cc["@mozilla.org/supports-string;1"].
-                 createInstance(Ci.nsISupportsString);
-    string.data = JSON.stringify(aManifest);
-    Services.prefs.setComplexValue(getPrefnameFromOrigin(aManifest.origin), Ci.nsISupportsString, string);
-
-    if (isNewInstall) {
-      AddonManagerPrivate.callAddonListeners("onInstalled", addon);
-    }
-    installCallback(aManifest);
-  };
-  this.cancel = function() {
-    Services.prefs.clearUserPref(getPrefnameFromOrigin(aManifest.origin));
-  };
-  this.addon = new AddonWrapper(aManifest);
-}
-
-var SocialAddonProvider = {
-  startup: function() {},
-
-  shutdown: function() {},
-
-  updateAddonAppDisabledStates: function() {
-    // we wont bother with "enabling" services that are released from blocklist
-    for (let manifest of SocialServiceInternal.manifests) {
-      try {
-        if (ActiveProviders.has(manifest.origin)) {
-          let addon = new AddonWrapper(manifest);
-          if (addon.blocklistState != Ci.nsIBlocklistService.STATE_NOT_BLOCKED) {
-            SocialService.disableProvider(manifest.origin);
-          }
-        }
-      } catch (e) {
-        Cu.reportError(e);
-      }
-    }
-  },
-
-  getAddonByID: function(aId, aCallback) {
-    for (let manifest of SocialServiceInternal.manifests) {
-      if (aId == getAddonIDFromOrigin(manifest.origin)) {
-        aCallback(new AddonWrapper(manifest));
-        return;
-      }
-    }
-    aCallback(null);
-  },
-
-  getAddonsByTypes: function(aTypes, aCallback) {
-    if (aTypes && aTypes.indexOf(ADDON_TYPE_SERVICE) == -1) {
-      aCallback([]);
-      return;
-    }
-    aCallback([...SocialServiceInternal.manifests].map(a => new AddonWrapper(a)));
-  },
-
-  removeAddon: function(aAddon, aCallback) {
-    AddonManagerPrivate.callAddonListeners("onUninstalling", aAddon, false);
-    aAddon.pendingOperations |= AddonManager.PENDING_UNINSTALL;
-    Services.prefs.clearUserPref(getPrefnameFromOrigin(aAddon.manifest.origin));
-    aAddon.pendingOperations -= AddonManager.PENDING_UNINSTALL;
-    AddonManagerPrivate.callAddonListeners("onUninstalled", aAddon);
-    SocialService._notifyProviderListeners("provider-uninstalled", aAddon.manifest.origin);
-    if (aCallback)
-      schedule(aCallback);
-  }
-};
-
-
-function AddonWrapper(aManifest) {
-  this.manifest = aManifest;
-  this.id = getAddonIDFromOrigin(this.manifest.origin);
-  this._pending = AddonManager.PENDING_NONE;
-}
-AddonWrapper.prototype = {
-  get type() {
-    return ADDON_TYPE_SERVICE;
-  },
-
-  get appDisabled() {
-    return this.blocklistState == Ci.nsIBlocklistService.STATE_BLOCKED;
-  },
-
-  set softDisabled(val) {
-    this.userDisabled = val;
-  },
-
-  get softDisabled() {
-    return this.userDisabled;
-  },
-
-  get isCompatible() {
-    return true;
-  },
-
-  get isPlatformCompatible() {
-    return true;
-  },
-
-  get scope() {
-    return AddonManager.SCOPE_PROFILE;
-  },
-
-  get foreignInstall() {
-    return false;
-  },
-
-  isCompatibleWith: function(appVersion, platformVersion) {
-    return true;
-  },
-
-  get providesUpdatesSecurely() {
-    return true;
-  },
-
-  get blocklistState() {
-    return Services.blocklist.getAddonBlocklistState(this);
-  },
-
-  get blocklistURL() {
-    return Services.blocklist.getAddonBlocklistURL(this);
-  },
-
-  get screenshots() {
-    return [];
-  },
-
-  get pendingOperations() {
-    return this._pending || AddonManager.PENDING_NONE;
-  },
-  set pendingOperations(val) {
-    this._pending = val;
-  },
-
-  get operationsRequiringRestart() {
-    return AddonManager.OP_NEEDS_RESTART_NONE;
-  },
-
-  get size() {
-    return null;
-  },
-
-  get permissions() {
-    let permissions = 0;
-    // any "user defined" manifest can be removed
-    if (Services.prefs.prefHasUserValue(getPrefnameFromOrigin(this.manifest.origin)))
-      permissions = AddonManager.PERM_CAN_UNINSTALL;
-    if (!this.appDisabled) {
-      if (this.userDisabled) {
-        permissions |= AddonManager.PERM_CAN_ENABLE;
-      } else {
-        permissions |= AddonManager.PERM_CAN_DISABLE;
-      }
-    }
-    return permissions;
-  },
-
-  findUpdates: function(listener, reason, appVersion, platformVersion) {
-    if ("onNoCompatibilityUpdateAvailable" in listener)
-      listener.onNoCompatibilityUpdateAvailable(this);
-    if ("onNoUpdateAvailable" in listener)
-      listener.onNoUpdateAvailable(this);
-    if ("onUpdateFinished" in listener)
-      listener.onUpdateFinished(this);
-  },
-
-  get isActive() {
-    return ActiveProviders.has(this.manifest.origin);
-  },
-
-  get name() {
-    return this.manifest.name;
-  },
-  get version() {
-    return this.manifest.version ? this.manifest.version.toString() : "";
-  },
-
-  get iconURL() {
-    return this.manifest.icon32URL ? this.manifest.icon32URL : this.manifest.iconURL;
-  },
-  get icon64URL() {
-    return this.manifest.icon64URL;
-  },
-  get icons() {
-    let icons = {
-      16: this.manifest.iconURL
-    };
-    if (this.manifest.icon32URL)
-      icons[32] = this.manifest.icon32URL;
-    if (this.manifest.icon64URL)
-      icons[64] = this.manifest.icon64URL;
-    return icons;
-  },
-
-  get description() {
-    return this.manifest.description;
-  },
-  get homepageURL() {
-    return this.manifest.homepageURL;
-  },
-  get defaultLocale() {
-    return this.manifest.defaultLocale;
-  },
-  get selectedLocale() {
-    return this.manifest.selectedLocale;
-  },
-
-  get installDate() {
-    return this.manifest.installDate ? new Date(this.manifest.installDate) : null;
-  },
-  get updateDate() {
-    return this.manifest.updateDate ? new Date(this.manifest.updateDate) : null;
-  },
-
-  get creator() {
-    return new AddonManagerPrivate.AddonAuthor(this.manifest.author);
-  },
-
-  get userDisabled() {
-    return this.appDisabled || !ActiveProviders.has(this.manifest.origin);
-  },
-
-  set userDisabled(val) {
-    if (val == this.userDisabled)
-      return val;
-    if (val) {
-      SocialService.disableProvider(this.manifest.origin);
-    } else if (!this.appDisabled) {
-      SocialService.enableProvider(this.manifest.origin);
-    }
-    return val;
-  },
-
-  uninstall: function(aCallback) {
-    let prefName = getPrefnameFromOrigin(this.manifest.origin);
-    if (Services.prefs.prefHasUserValue(prefName)) {
-      if (ActiveProviders.has(this.manifest.origin)) {
-        SocialService.disableProvider(this.manifest.origin, function() {
-          SocialAddonProvider.removeAddon(this, aCallback);
-        }.bind(this));
-      } else {
-        SocialAddonProvider.removeAddon(this, aCallback);
-      }
-    } else {
-      schedule(aCallback);
-    }
-  },
-
-  cancelUninstall: function() {
-    this._pending -= AddonManager.PENDING_UNINSTALL;
-    AddonManagerPrivate.callAddonListeners("onOperationCancelled", this);
-  }
-};
-
-
-AddonManagerPrivate.registerProvider(SocialAddonProvider, [
-  new AddonManagerPrivate.AddonType(ADDON_TYPE_SERVICE, URI_EXTENSION_STRINGS,
-                                    STRING_TYPE_NAME,
-                                    AddonManager.VIEW_TYPE_LIST, 10000)
-]);
diff --git a/browser/modules/moz.build b/browser/modules/moz.build
index 852a4c911..a7bbbc258 100644
--- a/browser/modules/moz.build
+++ b/browser/modules/moz.build
@@ -35,8 +35,6 @@ EXTRA_JS_MODULES += [
     'Sanitizer.jsm',
     'SelfSupportBackend.jsm',
     'SitePermissions.jsm',
-    'Social.jsm',
-    'SocialService.jsm',
     'TransientPrefs.jsm',
     'URLBarZoom.jsm',
     'webrtcUI.jsm',
diff --git a/browser/themes/linux/browser.css b/browser/themes/linux/browser.css
index 73d3844a2..3e6b81512 100644
--- a/browser/themes/linux/browser.css
+++ b/browser/themes/linux/browser.css
@@ -1172,56 +1172,6 @@ html|span.ac-emphasize-text-url {
   -moz-image-region: rect(0, 48px, 16px, 32px);
 }
 
-/* social share panel */
-%include ../shared/social/social.inc.css
-
-.social-share-frame {
-  border-top: 1px solid #f8f8f8;
-  width: 756px;
-  height: 150px;
-}
-
-#share-container {
-  min-width: 756px;
-  background-color: white;
-  background-repeat: no-repeat;
-  background-position: center center;
-}
-#share-container[loading] {
-  background-image: url(chrome://browser/skin/tabbrowser/pendingpaint.png);
-}
-#share-container > browser {
-  transition: opacity 150ms ease-in-out;
-  opacity: 1;
-}
-#share-container[loading] > browser {
-  opacity: 0;
-}
-
-.social-share-toolbar {
-  border-bottom: 1px solid #dedede;
-  padding: 2px;
-}
-
-#social-share-provider-buttons {
-  padding: 0;
-  margin: 0;
-}
-
-.share-provider-button {
-  padding: 5px;
-  margin: 2px;
-}
-
-.share-provider-button > .toolbarbutton-text {
-  display: none;
-}
-.share-provider-button > .toolbarbutton-icon {
-  width: 16px;
-  min-height: 16px;
-  max-height: 16px;
-}
-
 /* bookmarks menu-button */
 
 #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker {
diff --git a/browser/themes/linux/customizableui/panelUI.css b/browser/themes/linux/customizableui/panelUI.css
index 289faa085..0037b5634 100644
--- a/browser/themes/linux/customizableui/panelUI.css
+++ b/browser/themes/linux/customizableui/panelUI.css
@@ -49,14 +49,6 @@
   padding-inline-start: 0;
 }
 
-/* subviewbutton entries for social sidebars have images that come from external
-/* sources, and are not guaranteed to be the size we want, so force the size on
-/* those icons. */
-toolbarbutton.social-provider-menuitem > .toolbarbutton-icon {
-  width: 16px;
-  height: 16px;
-}
-
 .subviewbutton:-moz-any([image],[targetURI],.cui-withicon, .restoreallitem, .bookmark-item)[checked="true"] > .toolbarbutton-icon {
   visibility: hidden;
 }
diff --git a/browser/themes/linux/jar.mn b/browser/themes/linux/jar.mn
index 0bf023f35..189027812 100644
--- a/browser/themes/linux/jar.mn
+++ b/browser/themes/linux/jar.mn
@@ -81,10 +81,6 @@ browser.jar:
 * skin/classic/browser/preferences/in-content/preferences.css (preferences/in-content/preferences.css)
 * skin/classic/browser/preferences/in-content/dialog.css      (preferences/in-content/dialog.css)
   skin/classic/browser/preferences/applications.css   (preferences/applications.css)
-  skin/classic/browser/social/services-16.png         (social/services-16.png)
-  skin/classic/browser/social/services-64.png         (social/services-64.png)
-  skin/classic/browser/social/share-button.png        (social/share-button.png)
-  skin/classic/browser/social/share-button-active.png (social/share-button-active.png)
   skin/classic/browser/tabbrowser/alltabs.png         (tabbrowser/alltabs.png)
   skin/classic/browser/tabbrowser/alltabs-inverted.png (tabbrowser/alltabs-inverted.png)
   skin/classic/browser/tabbrowser/newtab.svg                (tabbrowser/newtab.svg)
diff --git a/browser/themes/osx/browser.css b/browser/themes/osx/browser.css
index e8ac9163e..5a83c74b2 100644
--- a/browser/themes/osx/browser.css
+++ b/browser/themes/osx/browser.css
@@ -808,10 +808,6 @@ toolbar .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker > .dropmarker-ic
     -moz-image-region: rect(18px, 288px, 36px, 270px);
   }
 
-  #social-share-button@toolbarButtonPressed@ {
-    -moz-image-region: rect(18px, 306px, 36px, 288px);
-  }
-
   #characterencoding-button@toolbarButtonPressed@ {
     -moz-image-region: rect(18px, 324px, 36px, 306px);
   }
@@ -967,10 +963,6 @@ toolbar .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker > .dropmarker-ic
     -moz-image-region: rect(36px, 576px, 72px, 540px);
   }
 
-  #social-share-button@toolbarButtonPressed@ {
-    -moz-image-region: rect(36px, 612px, 72px, 576px);
-  }
-
   #characterencoding-button@toolbarButtonPressed@ {
     -moz-image-region: rect(36px, 648px, 72px, 612px);
   }
@@ -2029,59 +2021,6 @@ html|span.ac-emphasize-text-url {
   -moz-image-region: rect(0, 48px, 16px, 32px);
 }
 
-/* social share panel */
-.social-share-frame {
-  border-top: 1px solid #f8f8f8;
-  min-width: 756px;
-  height: 150px;
-  /* we resize our panels dynamically, make it look nice */
-}
-
-#share-container {
-  min-width: 756px;
-  background-repeat: no-repeat;
-  background-position: center center;
-}
-#share-container[loading] {
-  background-image: url(chrome://browser/skin/tabbrowser/pendingpaint.png);
-}
-#share-container > browser {
-  transition: opacity 150ms ease-in-out;
-  opacity: 1;
-}
-#share-container[loading] > browser {
-  opacity: 0;
-}
-
-#manage-share-providers {
-  -moz-image-region: rect(18px, 468px, 36px, 450px);
-}
-
-.social-share-toolbar {
-  border-bottom: 1px solid #dedede;
-  padding: 2px;
-}
-
-#social-share-provider-buttons {
-  padding: 0;
-  margin: 0;
-}
-
-.share-provider-button {
-  padding: 5px;
-  margin: 2px;
-}
-
-.share-provider-button > .toolbarbutton-text {
-  display: none;
-}
-
-.share-provider-button > .toolbarbutton-icon {
-  width: 16px;
-  min-height: 16px;
-  max-height: 16px;
-}
-
 /* BOOKMARKING PANEL */
 #editBookmarkPanelStarIcon {
   list-style-image: url("chrome://browser/skin/places/starred48.png");
@@ -3182,33 +3121,6 @@ menulist.translate-infobar-element > .menulist-dropmarker {
   border-radius: 1px;
 }
 
-/* Share */
-%include ../shared/social/social.inc.css
-
-#social-share-panel {
-  min-height: 100px;
-  min-width: 300px;
-  transition: height .3s ease-in-out, width .3s ease-in-out;
-}
-
-#share-container,
-.social-share-frame {
-  border-top-left-radius: 0;
-  border-bottom-left-radius: inherit;
-  border-top-right-radius: 0;
-  border-bottom-right-radius: inherit;
-}
-
-#social-share-panel > .social-share-toolbar {
-  border-top-left-radius: inherit;
-  border-top-right-radius: inherit;
-}
-
-#social-share-provider-buttons {
-  border-top-left-radius: inherit;
-  border-top-right-radius: inherit;
-}
-
 /* Customization mode */
 
 %include ../shared/customizableui/customizeMode.inc.css
diff --git a/browser/themes/osx/jar.mn b/browser/themes/osx/jar.mn
index 98ba4e6ea..27802843d 100644
--- a/browser/themes/osx/jar.mn
+++ b/browser/themes/osx/jar.mn
@@ -124,10 +124,6 @@ browser.jar:
 * skin/classic/browser/preferences/in-content/preferences.css (preferences/in-content/preferences.css)
 * skin/classic/browser/preferences/in-content/dialog.css      (preferences/in-content/dialog.css)
   skin/classic/browser/preferences/applications.css         (preferences/applications.css)
-  skin/classic/browser/social/services-16.png               (social/services-16.png)
-  skin/classic/browser/social/services-16@2x.png            (social/services-16@2x.png)
-  skin/classic/browser/social/services-64.png               (social/services-64.png)
-  skin/classic/browser/social/services-64@2x.png            (social/services-64@2x.png)
   skin/classic/browser/tabbrowser/alltabs-box-bkgnd-icon.png             (tabbrowser/alltabs-box-bkgnd-icon.png)
   skin/classic/browser/tabbrowser/alltabs-box-bkgnd-icon-inverted.png    (tabbrowser/alltabs-box-bkgnd-icon-inverted.png)
   skin/classic/browser/tabbrowser/alltabs-box-bkgnd-icon-inverted@2x.png (tabbrowser/alltabs-box-bkgnd-icon-inverted@2x.png)
diff --git a/browser/themes/shared/aboutProviderDirectory.css b/browser/themes/shared/aboutProviderDirectory.css
deleted file mode 100644
index 73e570aad..000000000
--- a/browser/themes/shared/aboutProviderDirectory.css
+++ /dev/null
@@ -1,30 +0,0 @@
-%include aboutSocialError.css
-
-body {
-  width: 310px;
-  margin: 1em auto;
-}
-
-#message-box {
-  margin-top: 2em;
-  background: url('chrome://global/skin/icons/information-24.png') no-repeat left 4px;
-  padding-inline-start: 30px;
-}
-
-#activation-frame {
-  border: none;
-  margin: 0;
-  width: 310px;
-  height: 200px;
-}
-#activation > p {
-  width: 100%;
-  text-align: center;
-  margin: 0;
-  line-height: 2em;
-}
-.link {
-  text-decoration: none;
-  color: -moz-nativehyperlinktext;
-  cursor: pointer;
-}
diff --git a/browser/themes/shared/browser.inc b/browser/themes/shared/browser.inc
index c57b59237..81caf94d6 100644
--- a/browser/themes/shared/browser.inc
+++ b/browser/themes/shared/browser.inc
@@ -2,7 +2,7 @@
 
 % Note that zoom-reset-button is a bit different since it doesn't use an image and thus has the image with display: none.
 %define nestedButtons #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button
-%define primaryToolbarButtons #back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, @nestedButtons@, #e10s-button, #panic-button, #webide-button, #containers-panelmenu
+%define primaryToolbarButtons #back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, @nestedButtons@, #e10s-button, #panic-button, #webide-button, #containers-panelmenu
 
 %ifdef XP_MACOSX
 % Prior to 10.7 there wasn't a native fullscreen button so we use #restore-button to exit fullscreen
diff --git a/browser/themes/shared/customizableui/panelUI.inc.css b/browser/themes/shared/customizableui/panelUI.inc.css
index b0bb05415..ba36da995 100644
--- a/browser/themes/shared/customizableui/panelUI.inc.css
+++ b/browser/themes/shared/customizableui/panelUI.inc.css
@@ -951,7 +951,6 @@ panelview .toolbarbutton-1,
 .subviewbutton,
 .widget-overflow-list .toolbarbutton-1,
 .panelUI-grid .toolbarbutton-1 > .toolbarbutton-menubutton-button,
-.share-provider-button,
 .toolbaritem-combined-buttons@inAnyPanel@ > toolbarbutton {
   -moz-appearance: none;
   padding: 0 6px;
@@ -964,7 +963,6 @@ panelview .toolbarbutton-1,
 panelview .toolbarbutton-1,
 .subviewbutton,
 .widget-overflow-list .toolbarbutton-1,
-.share-provider-button,
 .toolbaritem-combined-buttons@inAnyPanel@ > toolbarbutton {
   border-width: 1px;
 }
@@ -1038,7 +1036,6 @@ panelview .toolbarbutton-1@buttonStateHover@,
 toolbarbutton.subviewbutton@buttonStateHover@,
 menu.subviewbutton@menuStateHover@,
 menuitem.subviewbutton@menuStateHover@,
-.share-provider-button@buttonStateHover@:not([checked="true"]),
 .widget-overflow-list .toolbarbutton-1@buttonStateHover@,
 .toolbaritem-combined-buttons@inAnyPanel@ > toolbarbutton@buttonStateHover@ {
   background-color: var(--arrowpanel-dimmed);
@@ -1053,7 +1050,6 @@ panelview .toolbarbutton-1:-moz-any(@buttonStateActive@,[checked=true]),
 toolbarbutton.subviewbutton@buttonStateActive@,
 menu.subviewbutton@menuStateActive@,
 menuitem.subviewbutton@menuStateActive@,
-.share-provider-button:-moz-any(@buttonStateActive@,[checked=true]),
 .widget-overflow-list .toolbarbutton-1@buttonStateActive@,
 .toolbaritem-combined-buttons@inAnyPanel@ > toolbarbutton@buttonStateActive@ {
   background-color: var(--arrowpanel-dimmed-further);
diff --git a/browser/themes/shared/jar.inc.mn b/browser/themes/shared/jar.inc.mn
index dcc1e9dd9..588cf5364 100644
--- a/browser/themes/shared/jar.inc.mn
+++ b/browser/themes/shared/jar.inc.mn
@@ -10,9 +10,7 @@
   skin/classic/browser/aboutNetError.css                       (../shared/aboutNetError.css)
   skin/classic/browser/blockedSite.css                         (../shared/blockedSite.css)
   skin/classic/browser/error-pages.css                         (../shared/error-pages.css)
-* skin/classic/browser/aboutProviderDirectory.css              (../shared/aboutProviderDirectory.css)
 * skin/classic/browser/aboutSessionRestore.css                 (../shared/aboutSessionRestore.css)
-  skin/classic/browser/aboutSocialError.css                    (../shared/aboutSocialError.css)
   skin/classic/browser/aboutTabCrashed.css                     (../shared/aboutTabCrashed.css)
   skin/classic/browser/aboutWelcomeBack.css                    (../shared/aboutWelcomeBack.css)
   skin/classic/browser/content-contextmenu.svg                 (../shared/content-contextmenu.svg)
@@ -100,8 +98,6 @@
   skin/classic/browser/search-indicator-magnifying-glass.svg   (../shared/search/search-indicator-magnifying-glass.svg)
   skin/classic/browser/search-arrow-go.svg                     (../shared/search/search-arrow-go.svg)
   skin/classic/browser/gear.svg                                (../shared/search/gear.svg)
-  skin/classic/browser/social/gear_default.png                 (../shared/social/gear_default.png)
-  skin/classic/browser/social/gear_clicked.png                 (../shared/social/gear_clicked.png)
   skin/classic/browser/tabbrowser/connecting.png               (../shared/tabbrowser/connecting.png)
   skin/classic/browser/tabbrowser/connecting@2x.png            (../shared/tabbrowser/connecting@2x.png)
   skin/classic/browser/tabbrowser/crashed.svg                  (../shared/tabbrowser/crashed.svg)
diff --git a/browser/themes/shared/menupanel.inc.css b/browser/themes/shared/menupanel.inc.css
index 7517e4df0..266e1c83e 100644
--- a/browser/themes/shared/menupanel.inc.css
+++ b/browser/themes/shared/menupanel.inc.css
@@ -63,11 +63,6 @@ toolbarpaletteitem[place="palette"] > #feed-button {
   -moz-image-region: rect(0px, 416px, 32px, 384px);
 }
 
-#social-share-button[cui-areatype="menu-panel"],
-toolbarpaletteitem[place="palette"] > #social-share-button {
-  -moz-image-region: rect(0px, 448px, 32px, 416px);
-}
-
 #characterencoding-button[cui-areatype="menu-panel"],
 toolbarpaletteitem[place="palette"] > #characterencoding-button {
   -moz-image-region: rect(0px, 480px, 32px, 448px);
@@ -176,8 +171,3 @@ toolbarpaletteitem[place="palette"] > #zoom-controls > #zoom-in-button {
   -moz-image-region: rect(0px, 96px, 16px, 80px);
 }
 
-#add-share-provider {
-  list-style-image: url(chrome://browser/skin/menuPanel-small.svg);
-  -moz-image-region: rect(0px, 96px, 16px, 80px);
-}
-
diff --git a/browser/themes/shared/notification-icons.inc.css b/browser/themes/shared/notification-icons.inc.css
index 595e911b6..86dce73a1 100644
--- a/browser/themes/shared/notification-icons.inc.css
+++ b/browser/themes/shared/notification-icons.inc.css
@@ -271,28 +271,6 @@ html|*#webRTC-previewVideo {
   }
 }
 
-/* SOCIAL API */
-
-.popup-notification-icon[popupid="servicesInstall"] {
-  list-style-image: url(chrome://browser/skin/social/services-64.png);
-}
-
-.service-icon {
-  list-style-image: url(chrome://browser/skin/social/services-16.png);
-}
-
-%ifdef XP_MACOSX
-@media (min-resolution: 1.1dppx) {
-  .popup-notification-icon[popupid="servicesInstall"] {
-    list-style-image: url(chrome://browser/skin/social/services-64@2x.png);
-  }
-
-  .service-icon {
-    list-style-image: url(chrome://browser/skin/social/services-16@2x.png);
-  }
-}
-%endif
-
 /* TRANSLATION */
 
 .translation-icon {
diff --git a/browser/themes/shared/social/gear_clicked.png b/browser/themes/shared/social/gear_clicked.png
deleted file mode 100644
index 7c93aa767..000000000
Binary files a/browser/themes/shared/social/gear_clicked.png and /dev/null differ
diff --git a/browser/themes/shared/social/gear_default.png b/browser/themes/shared/social/gear_default.png
deleted file mode 100644
index 2a9c8e198..000000000
Binary files a/browser/themes/shared/social/gear_default.png and /dev/null differ
diff --git a/browser/themes/shared/social/social.inc.css b/browser/themes/shared/social/social.inc.css
deleted file mode 100644
index 31389b215..000000000
--- a/browser/themes/shared/social/social.inc.css
+++ /dev/null
@@ -1,23 +0,0 @@
-%if 0
-/* 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/. */
-%endif
-
-#manage-share-providers {
-  list-style-image: url("chrome://browser/skin/Toolbar.png");
-  -moz-image-region: rect(0, 468px, 18px, 450px);
-}
-
-#manage-share-providers > .toolbarbutton-icon {
-  min-height: 18px;
-  min-width: 18px;
-}
-
-.social-panel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0;
-}
-/* fixup corners for share panel */
-.social-panel > .social-panel-frame {
-  border-radius: inherit;
-}
diff --git a/browser/themes/shared/toolbarbuttons.inc.css b/browser/themes/shared/toolbarbuttons.inc.css
index b3b3ffcf8..c043b8192 100644
--- a/browser/themes/shared/toolbarbuttons.inc.css
+++ b/browser/themes/shared/toolbarbuttons.inc.css
@@ -64,10 +64,6 @@ toolbar[brighttext] #bookmarks-menu-button > .toolbarbutton-menubutton-dropmarke
   -moz-image-region: rect(0, 288px, 18px, 270px);
 }
 
-#social-share-button[cui-areatype="toolbar"] {
-  -moz-image-region: rect(0px, 306px, 18px, 288px);
-}
-
 #characterencoding-button[cui-areatype="toolbar"]{
   -moz-image-region: rect(0, 324px, 18px, 306px);
 }
@@ -242,10 +238,6 @@ toolbar[brighttext] #bookmarks-menu-button > .toolbarbutton-menubutton-dropmarke
     -moz-image-region: rect(0, 576px, 36px, 540px);
   }
 
-  #social-share-button[cui-areatype="toolbar"] {
-    -moz-image-region: rect(0, 612px, 36px, 576px);
-  }
-
   #characterencoding-button[cui-areatype="toolbar"] {
     -moz-image-region: rect(0, 648px, 36px, 612px);
   }
diff --git a/browser/themes/windows/browser.css b/browser/themes/windows/browser.css
index a0cdabfb2..b364dbc36 100644
--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -1784,81 +1784,6 @@ html|span.ac-emphasize-text-url {
   -moz-image-region: rect(0, 48px, 16px, 32px);
 }
 
-/* social share panel */
-%include ../shared/social/social.inc.css
-
-.social-panel-frame {
-  border-radius: inherit;
-}
-
-.social-share-frame {
-  min-width: 756px;
-  height: 150px;
-}
-#share-container {
-  min-width: 756px;
-  background-color: white;
-  background-repeat: no-repeat;
-  background-position: center center;
-}
-#share-container[loading] {
-  background-image: url(chrome://browser/skin/tabbrowser/pendingpaint.png);
-}
-#share-container > browser {
-  transition: opacity 150ms ease-in-out;
-  opacity: 1;
-}
-#share-container[loading] > browser {
-  opacity: 0;
-}
-
-.social-share-toolbar {
-  border-bottom: 1px solid #e2e5e8;
-  padding: 2px;
-}
-
-#social-share-provider-buttons {
-  padding: 0;
-  margin: 0;
-}
-
-.share-provider-button {
-  padding: 5px;
-  margin: 2px;
-}
-
-.share-provider-button > .toolbarbutton-text {
-  display: none;
-}
-.share-provider-button > .toolbarbutton-icon {
-  width: 16px;
-  min-height: 16px;
-  max-height: 16px;
-}
-
-#social-share-panel {
-  min-height: 100px;
-  min-width: 766px;
-}
-
-#share-container,
-.social-share-frame {
-  border-top-left-radius: 0;
-  border-bottom-left-radius: inherit;
-  border-top-right-radius: 0;
-  border-bottom-right-radius: inherit;
-}
-
-#social-share-panel > .social-share-toolbar {
-  border-top-left-radius: inherit;
-  border-top-right-radius: inherit;
-}
-
-#social-share-provider-buttons {
-  border-top-left-radius: inherit;
-  border-top-right-radius: inherit;
-}
-
 /* bookmarks menu-button */
 
 #nav-bar #bookmarks-menu-button[cui-areatype="toolbar"]:not([overflowedItem=true]) > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
diff --git a/browser/themes/windows/customizableui/panelUI.css b/browser/themes/windows/customizableui/panelUI.css
index 189a163f3..a01a2f3e3 100644
--- a/browser/themes/windows/customizableui/panelUI.css
+++ b/browser/themes/windows/customizableui/panelUI.css
@@ -97,14 +97,6 @@ menuitem[type="checkbox"].subviewbutton {
   padding-inline-start: 0;
 }
 
-/* subviewbutton entries for social sidebars have images that come from external
-/* sources, and are not guaranteed to be the size we want, so force the size on
-/* those icons. */
-toolbarbutton.social-provider-menuitem > .toolbarbutton-icon {
-  width: 16px;
-  height: 16px;
-}
-
 .subviewbutton:-moz-any([image],[targetURI],.cui-withicon, .restoreallitem, .bookmark-item)[checked="true"] > .toolbarbutton-icon {
   visibility: hidden;
 }
diff --git a/browser/themes/windows/jar.mn b/browser/themes/windows/jar.mn
index 410148645..e8db7eed2 100644
--- a/browser/themes/windows/jar.mn
+++ b/browser/themes/windows/jar.mn
@@ -109,8 +109,6 @@ browser.jar:
 * skin/classic/browser/preferences/in-content/preferences.css  (preferences/in-content/preferences.css)
 * skin/classic/browser/preferences/in-content/dialog.css       (preferences/in-content/dialog.css)
   skin/classic/browser/preferences/applications.css            (preferences/applications.css)
-  skin/classic/browser/social/services-16.png                  (social/services-16.png)
-  skin/classic/browser/social/services-64.png                  (social/services-64.png)
   skin/classic/browser/tabbrowser/newtab.svg                   (tabbrowser/newtab.svg)
   skin/classic/browser/tabbrowser/newtab-win7.svg              (tabbrowser/newtab-win7.svg)
   skin/classic/browser/tabbrowser/newtab-inverted.svg          (tabbrowser/newtab-inverted.svg)
-- 
cgit v1.2.3