--- a/browser/base/content/browser.css
+++ b/browser/base/content/browser.css
@@ -883,20 +883,16 @@ html|*#gcli-output-frame,
 .browserStack[responsivemode] {
   transition-property: min-width, max-width, min-height, max-height;
 }
 
 .browserStack[responsivemode][notransition] {
   transition: none;
 }
 
-toolbarbutton[type="socialmark"] {
-  -moz-binding: url("chrome://browser/content/socialmarks.xml#toolbarbutton-marks");
-}
-
 panelview > .social-panel-frame {
   width: auto;
   height: auto;
 }
 
 /* Translation */
 notification[value="translation"] {
   -moz-binding: url("chrome://browser/content/translation-infobar.xml#translationbar");

--- a/browser/themes/linux/browser.css
+++ b/browser/themes/linux/browser.css
@@ -1359,16 +1359,17 @@ html|span.ac-emphasize-text-url {
 }
 
 #reader-mode-button:hover:active,
 #reader-mode-button[readeractive] {
   -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 {
@@ -1407,22 +1408,16 @@ html|span.ac-emphasize-text-url {
   display: none;
 }
 .share-provider-button > .toolbarbutton-icon {
   width: 16px;
   min-height: 16px;
   max-height: 16px;
 }
 
-/* social recommending panel */
-
-#social-mark-button {
-  -moz-image-region: rect(0, 16px, 16px, 0);
-}
-
 /* bookmarks menu-button */
 
 #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker {
   -moz-appearance: none !important;
   -moz-box-align: center;
 }
 
 #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
@@ -1807,40 +1802,16 @@ notification.pluginVulnerable > .notific
   color: #FDF3DE;
   min-width: 16px;
   text-shadow: none;
   background-image: linear-gradient(#B4211B, #8A1915);
   border-radius: 1px;
   margin-inline-end: 2px;
 }
 
-/* social toolbar provider menu */
-#social-statusarea-popup {
-  margin-top: 0;
-  margin-left: -12px;
-  margin-right: -12px;
-}
-
-.social-statusarea-user {
-  list-style-image:url("chrome://global/skin/icons/information-32.png");
-}
-
-.social-statusarea-user-portrait {
-  width: 32px;
-  height: 32px;
-  border-radius: 2px;
-  margin: 10px;
-}
-
-.social-panel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0;
-}
-
-%include ../shared/social/chat.inc.css
-
 /* Customization mode */
 
 %include ../shared/customizableui/customizeMode.inc.css
 
 #main-window[customize-entered] > #tab-view-deck {
   background-image: url("chrome://browser/skin/customizableui/customizeMode-gridTexture.png"),
                     linear-gradient(to bottom, #bcbcbc, #b5b5b5);
   background-attachment: fixed;

--- a/browser/themes/osx/browser.css
+++ b/browser/themes/osx/browser.css
@@ -1987,34 +1987,31 @@ html|span.ac-emphasize-text-url {
   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-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;
 }
 
-#manage-share-providers,
-#social-sidebar-button:hover,
-#social-sidebar-button:hover:active {
+#manage-share-providers {
   -moz-image-region: rect(18px, 468px, 36px, 450px);
 }
 
 .social-share-toolbar {
   border-bottom: 1px solid #dedede;
   padding: 2px;
 }
 
@@ -2033,22 +2030,16 @@ html|span.ac-emphasize-text-url {
 }
 
 .share-provider-button > .toolbarbutton-icon {
   width: 16px;
   min-height: 16px;
   max-height: 16px;
 }
 
-/* social recommending panel */
-
-#social-mark-button {
-  -moz-image-region: rect(0, 16px, 16px, 0);
-}
-
 /* BOOKMARKING PANEL */
 #editBookmarkPanelStarIcon {
   list-style-image: url("chrome://browser/skin/places/starred48.png");
   width: 48px;
   height: 48px;
 }
 
 #editBookmarkPanelStarIcon[unstarred] {
@@ -2959,20 +2950,16 @@ menuitem:hover > hbox > .alltabs-endimag
 
 %include ../shared/notification-icons.inc.css
 
 .notification-anchor-icon:-moz-focusring {
   box-shadow: 0 0 2px 1px -moz-mac-focusring inset,
               0 0 3px 2px -moz-mac-focusring;
 }
 
-#social-notification-icon > .toolbarbutton-icon {
-  height: 16px;
-}
-
 /* Translation */
 
 %include ../shared/translation/infobar.inc.css
 
 notification[value="translation"] {
   color: #484848;
   background-color: #EFEFEF;
   background-image: none;
@@ -3218,39 +3205,18 @@ menulist.translate-infobar-element > .me
 #developer-toolbar-toolbox-button[error-count]:before {
   color: #FDF3DE;
   min-width: 16px;
   text-shadow: none;
   background-image: linear-gradient(#B4211B, #8A1915);
   border-radius: 1px;
 }
 
-/* === end of social toolbar button === */
-
-/* === social toolbar provider menu  === */
-
-.social-statusarea-user {
-  list-style-image:url("chrome://global/skin/icons/information-32.png");
-}
-
-.social-statusarea-user-portrait {
-  width: 32px;
-  height: 32px;
-  margin: 4px;
-  margin-inline-start: 0;
-}
-
-.social-panel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0;
-}
-
-/* fixup rounded corners for osx panels */
-.social-panel > .social-panel-frame {
-  border-radius: inherit;
-}
+/* 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,
@@ -3266,20 +3232,16 @@ menulist.translate-infobar-element > .me
   border-top-right-radius: inherit;
 }
 
 #social-share-provider-buttons {
   border-top-left-radius: inherit;
   border-top-right-radius: inherit;
 }
 
-/* === end of social toolbar provider menu === */
-
-%include ../shared/social/chat.inc.css
-
 /* Customization mode */
 
 %include ../shared/customizableui/customizeMode.inc.css
 
 #main-window[customizing] {
   background-color: rgb(178,178,178);
 }
 

--- a/browser/themes/shared/jar.inc.mn
+++ b/browser/themes/shared/jar.inc.mn
@@ -94,17 +94,16 @@
   skin/classic/browser/badge-add-engine.png                    (../shared/search/badge-add-engine.png)
   skin/classic/browser/badge-add-engine@2x.png                 (../shared/search/badge-add-engine@2x.png)
   skin/classic/browser/search-indicator-badge-add.png          (../shared/search/search-indicator-badge-add.png)
   skin/classic/browser/search-indicator-badge-add@2x.png       (../shared/search/search-indicator-badge-add@2x.png)
   skin/classic/browser/search-history-icon.svg                 (../shared/search/history-icon.svg)
   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/chat-icons.svg                   (../shared/social/chat-icons.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)
   skin/classic/browser/tabbrowser/pendingpaint.png             (../shared/tabbrowser/pendingpaint.png)
 * skin/classic/browser/tabbrowser/tab-audio.svg                (../shared/tabbrowser/tab-audio.svg)
   skin/classic/browser/tabbrowser/tab-audio-small.svg          (../shared/tabbrowser/tab-audio-small.svg)

deleted file mode 100644
--- a/browser/themes/shared/social/chat-icons.svg
+++ /dev/null
@@ -1,51 +0,0 @@
-<?xml version="1.0"?>
-<!-- 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/. -->
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="-3 -3 16 16">
-  <style>
-    use:not(:target) {
-      display: none;
-    }
-    use {
-      fill: #666;
-    }
-    use[id$="-hover"] {
-      fill: #4a4a4a;
-    }
-    use[id$="-active"] {
-      fill: #4a4a4a;
-    }
-    use[id$="-disabled"] {
-      fill: #666;
-    }
-    use[id$="-white"] {
-      fill: #fff;
-    }
-  </style>
-  <defs>
-    <polygon id="close-shape" points="10,1.717 8.336,0.049 5.024,3.369 1.663,0 0,1.668 3.36,5.037 0.098,8.307 1.762,9.975 5.025,6.705 8.311,10 9.975,8.332 6.688,5.037"/>
-    <path id="dropdown-shape" fill-rule="evenodd" d="M9,3L4.984,7L1,3H9z"/>
-    <g id="expand-shape">
-      <path fill-rule="evenodd" d="M9.429,7.072v2.143c0,0.531-0.188,0.985-0.566,1.363c-0.377,0.377-0.832,0.565-1.363,0.565H1.929 c-0.531,0-0.986-0.188-1.363-0.565C0.188,10.2,0,9.746,0,9.214V3.643c0-0.531,0.188-0.985,0.566-1.362 c0.377-0.378,0.832-0.566,1.363-0.566h4.714c0.062,0,0.114,0.021,0.154,0.061s0.06,0.092,0.06,0.154v0.428 c0,0.063-0.02,0.114-0.06,0.154S6.705,2.572,6.643,2.572H1.929c-0.295,0-0.547,0.104-0.757,0.314S0.857,3.348,0.857,3.643v5.571 c0,0.295,0.105,0.547,0.315,0.757s0.462,0.314,0.757,0.314H7.5c0.294,0,0.547-0.104,0.757-0.314 c0.209-0.21,0.314-0.462,0.314-0.757V7.072c0-0.062,0.02-0.114,0.061-0.154c0.04-0.04,0.091-0.061,0.154-0.061h0.428 c0.062,0,0.114,0.021,0.154,0.061S9.429,7.009,9.429,7.072z"/>
-      <path fill-rule="evenodd" d="M7.07,5.82L6.179,4.93C6.127,4.878,6.101,4.818,6.101,4.75s0.026-0.128,0.079-0.18l2.594-2.594L7.648,0.852 C7.549,0.753,7.5,0.636,7.5,0.5s0.049-0.252,0.148-0.351S7.864,0,8,0h3.5c0.136,0,0.252,0.05,0.351,0.149S12,0.365,12,0.5V4 c0,0.136-0.05,0.253-0.149,0.351C11.752,4.451,11.635,4.5,11.5,4.5c-0.136,0-0.253-0.05-0.352-0.149l-1.124-1.125L7.429,5.82 c-0.052,0.052-0.112,0.079-0.18,0.079"/>
-    </g>
-    <rect id="minimize-shape" y="7.5" width="10" height="2.2"/>
-    <path id="exit-shape" fill-rule="evenodd" d="M5.01905144,3.00017279 C5.01277908,3.00005776 5.0064926,3 5.00019251,3 L1.99980749,3 C1.44371665,3 1,3.44762906 1,3.99980749 L1,7.00019251 C1,7.55628335 1.44762906,8 1.99980749,8 L5.00019251,8 C5.00649341,8 5.01277988,7.99994253 5.01905144,7.99982809 L5.01905144,8.5391818 C5.01905144,10.078915 5.37554713,10.2645548 5.81530684,9.9314625 L10.8239665,6.13769619 C11.2653143,5.80340108 11.2637262,5.26455476 10.8239665,4.93146254 L5.81530684,1.13769619 C5.37395904,0.80340108 5.01905144,0.98023404 5.01905144,1.52997693 L5.01905144,3.00017279 Z M-1,1 L4,1 L4,2 L0,2 L0,9 L4,9 L4,10.0100024 L-1,10.0100021 L-1,1 Z" />
-  </defs>
-  <use id="close" xlink:href="#close-shape"/>
-  <use id="close-active" xlink:href="#close-shape"/>
-  <use id="close-disabled" xlink:href="#close-shape"/>
-  <use id="close-hover" xlink:href="#close-shape"/>
-  <use id="exit-white" xlink:href="#exit-shape"/>
-  <use id="expand" xlink:href="#expand-shape"/>
-  <use id="expand-active" xlink:href="#expand-shape"/>
-  <use id="expand-disabled" xlink:href="#expand-shape"/>
-  <use id="expand-hover" xlink:href="#expand-shape"/>
-  <use id="expand-white" xlink:href="#expand-shape"/>
-  <use id="minimize" xlink:href="#minimize-shape"/>
-  <use id="minimize-active" xlink:href="#minimize-shape"/>
-  <use id="minimize-disabled" xlink:href="#minimize-shape"/>
-  <use id="minimize-hover" xlink:href="#minimize-shape"/>
-  <use id="minimize-white" xlink:href="#minimize-shape"/>
-</svg>

deleted file mode 100644
--- a/browser/themes/shared/social/chat.inc.css
+++ /dev/null
@@ -1,238 +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
-
-#social-sidebar-header {
-  padding: 3px;
-}
-
-#manage-share-providers,
-#social-sidebar-button {
-  list-style-image: url("chrome://browser/skin/Toolbar.png");
-  -moz-image-region: rect(0, 468px, 18px, 450px);
-}
-
-#social-sidebar-button {
-  -moz-appearance: none;
-  border: none;
-  padding: 0;
-  margin: 2px;
-}
-#manage-share-providers > .toolbarbutton-icon,
-#social-sidebar-button > .toolbarbutton-icon {
-  min-height: 18px;
-  min-width: 18px;
-}
-
-#social-sidebar-button > .toolbarbutton-menu-dropmarker {
-  display: none;
-}
-
-#social-sidebar-button[loading="true"] {
-  list-style-image: url("chrome://global/skin/icons/loading.png");
-}
-
-#social-sidebar-favico {
-  max-height: 16px;
-  max-width: 16px;
-  padding: 0;
-  margin: 2px;
-}
-
-.chat-status-icon {
-  max-height: 16px;
-  max-width: 16px;
-  padding: 0;
-}
-
-.chat-toolbarbutton {
-  -moz-appearance: none;
-  border: none;
-  padding: 0 3px;
-  margin: 0;
-  background: none;
-}
-
-.chat-toolbarbutton > .toolbarbutton-text {
-  display: none;
-}
-
-.chat-toolbarbutton > .toolbarbutton-icon {
-  width: 16px;
-  height: 16px;
-}
-
-.chat-close-button {
-  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#close");
-}
-
-.chat-close-button:hover {
-  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#close-hover");
-}
-
-.chat-close-button:hover:active {
-  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#close-active");
-}
-
-.chat-minimize-button {
-  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#minimize");
-}
-
-.chat-minimize-button:hover {
-  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#minimize-hover");
-}
-
-.chat-minimize-button:hover:active {
-  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#minimize-active");
-}
-
-.chat-swap-button {
-  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#expand");
-  transform: rotate(180deg);
-}
-
-.chat-swap-button:hover {
-  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#expand-hover");
-}
-
-.chat-swap-button:hover:active {
-  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#expand-active");
-}
-
-chatbar > chatbox > .chat-titlebar > .chat-swap-button {
-  transform: none;
-}
-
-.chat-title {
-  color: #666;
-  text-shadow: none;
-  cursor: inherit;
-}
-
-.chat-titlebar {
-  height: 26px;
-  min-height: 26px;
-  width: 100%;
-  margin: 0;
-  padding: 5px 4px;
-  border: 1px solid #ebebeb;
-  border-bottom: 0;
-  border-top-left-radius: 4px;
-  border-top-right-radius: 4px;
-  cursor: pointer;
-  background-color: #ebebeb;
-}
-
-.chat-titlebar[selected] {
-  background-color: #f0f0f0;
-}
-
-.chat-titlebar > .notification-anchor-icon {
-  margin-left: 2px;
-  margin-right: 2px;
-}
-
-.chat-titlebar[minimized="true"] {
-  border-bottom: none;
-}
-
-.chat-titlebar[activity] {
-  background-image: radial-gradient(ellipse closest-side at center, rgb(255,255,255), transparent);
-  background-repeat: no-repeat;
-  background-size: 100% 20px;
-  background-position: 0 -10px;
-}
-
-.chat-frame {
-  padding: 0;
-  margin: 0;
-  overflow: hidden;
-}
-
-.chatbar-button {
-  list-style-image: url("chrome://browser/skin/social/services-16.png");
-  margin: 0;
-  padding: 2px;
-  height: 21px;
-  width: 21px;
-  border: 1px solid #ccc;
-  border-bottom: none;
-  background-color: #d9d9d9;
-  background-image: linear-gradient(rgba(255,255,255,.43), transparent);
-  border-top-left-radius: 3px;
-  border-top-right-radius: 3px;
-}
-
-@media (min-resolution: 2dppx) {
-  .chatbar-button {
-    list-style-image: url("chrome://browser/skin/social/services-16@2x.png");
-  }
-}
-
-.chatbar-button:hover,
-.chatbar-button[open="true"] {
-  background-color: #f0f0f0;
-}
-
-.chatbar-button[activity]:not([open]) {
-  background-image: radial-gradient(circle farthest-corner at center 2px, rgb(254,254,255) 3%, rgba(210,235,255,0.9) 12%, rgba(148,205,253,0.6) 30%, rgba(148,205,253,0.2) 70%);
-}
-
-.chatbar-button > .toolbarbutton-icon {
-  width: 16px;
-}
-
-.chatbar-button > menupopup > .menuitem-iconic > .menu-iconic-left > .menu-iconic-icon {
-  width: auto;
-  height: auto;
-  max-height: 16px;
-  max-width: 16px;
-}
-
-.chatbar-button[open="true"] {
-  box-shadow: inset 0 2px 5px rgba(0,0,0,0.6), 0 1px rgba(255,255,255,0.2);
-}
-
-.chatbar-button > .toolbarbutton-text,
-.chatbar-button > .toolbarbutton-menu-dropmarker {
-  display: none;
-}
-
-.chatbar-button > menupopup > menuitem[activity] {
-  font-weight: bold;
-}
-
-.chatbar-innerbox {
-  background: transparent;
-  overflow: hidden;
-}
-
-chatbar {
-  margin-inline-end: 20px;
-}
-
-chatbox {
-  margin-inline-start: 4px;
-  background-color: transparent;
-}
-
-chatbar > chatbox {
-  /* Apply the same border-radius as the .chat-titlebar to make the box-shadow
-     go round nicely. */
-  border-top-left-radius: 4px;
-  border-top-right-radius: 4px;
-  box-shadow: 0 0 5px rgba(0,0,0,.3);
-  /* Offset the chatbox the same amount as the box-shadows' spread, to make it
-     visible. */
-  margin-inline-end: 5px;
-}
-
-window > chatbox {
-  margin-inline-start: 0px;
-  margin: 0px;
-  border: none;
-  padding: 0px;
-  border-radius: 4px;
-}

new file mode 100644
--- /dev/null
+++ b/browser/themes/shared/social/social.inc.css
@@ -0,0 +1,23 @@
+%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;
+}

--- a/browser/themes/windows/browser-aero.css
+++ b/browser/themes/windows/browser-aero.css
@@ -49,19 +49,17 @@
   @media (-moz-os-version: windows-vista),
          (-moz-os-version: windows-win7) {
     .sidebar-header:not(:-moz-lwtheme),
     #sidebar-header:not(:-moz-lwtheme) {
       background-color: #EEF3FA;
     }
 
     .sidebar-splitter,
-    #appcontent ~ .sidebar-splitter,
-    .chatbar-button,
-    chatbar > chatbox {
+    #appcontent ~ .sidebar-splitter {
       border-color: #A9B7C9;
     }
 
     #navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar):not(:-moz-lwtheme),
     #browser-bottombox:not(:-moz-lwtheme),
     .browserContainer > findbar {
       background-color: @customToolbarColor@;
     }

--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -1799,16 +1799,21 @@ html|span.ac-emphasize-text-url {
 }
 
 #reader-mode-button:hover:active,
 #reader-mode-button[readeractive] {
   -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;
@@ -1845,22 +1850,16 @@ html|span.ac-emphasize-text-url {
   display: none;
 }
 .share-provider-button > .toolbarbutton-icon {
   width: 16px;
   min-height: 16px;
   max-height: 16px;
 }
 
-
-/* fixup corners for share panel */
-.social-panel > .social-panel-frame {
-  border-radius: inherit;
-}
-
 #social-share-panel {
   min-height: 100px;
   min-width: 766px;
 }
 
 #share-container,
 .social-share-frame {
   border-top-left-radius: 0;
@@ -1874,22 +1873,16 @@ html|span.ac-emphasize-text-url {
   border-top-right-radius: inherit;
 }
 
 #social-share-provider-buttons {
   border-top-left-radius: inherit;
   border-top-right-radius: inherit;
 }
 
-/* social recommending panel */
-
-#social-mark-button {
-  -moz-image-region: rect(0, 16px, 16px, 0);
-}
-
 /* bookmarks menu-button */
 
 #nav-bar #bookmarks-menu-button[cui-areatype="toolbar"]:not([overflowedItem=true]) > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
   padding-top: var(--toolbarbutton-vertical-inner-padding);
   padding-bottom: var(--toolbarbutton-vertical-inner-padding);
 }
 
 #BMB_bookmarksPopup[side="top"],
@@ -2459,63 +2452,16 @@ notification.pluginVulnerable > .notific
   color: #FDF3DE;
   min-width: 16px;
   text-shadow: none;
   background-image: linear-gradient(#B4211B, #8A1915);
   border-radius: 1px;
   margin-inline-end: 5px;
 }
 
-/* social toolbar provider menu */
-.social-statusarea-popup {
-  margin-top: 0;
-  margin-left: -12px;
-  margin-right: -12px;
-}
-
-.social-statusarea-user {
-  -moz-appearance: none;
-  border-bottom: 1px solid rgb(221,221,221);
-  background-color: -moz-Dialog;
-  position: relative;
-  cursor: pointer;
-  list-style-image:url("chrome://global/skin/icons/information-32.png");
-}
-
-.social-statusarea-user-portrait {
-  width: 32px;
-  height: 32px;
-  border-radius: 2px;
-  margin: 10px;
-}
-
-.social-statusarea-loggedInStatus {
-  -moz-appearance: none;
-  background: transparent;
-  border: none;
-  color: -moz-nativehyperlinktext;
-  min-width: 0;
-  margin: 0 6px;
-  list-style-image: none;
-}
-
-.social-statusarea-user[_moz-menuactive] > vbox > .social-statusarea-loggedInStatus {
-  text-decoration: underline;
-}
-
-.social-panel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0;
-}
-
-.social-panel-frame {
-  border-radius: inherit;
-}
-
-%include ../shared/social/chat.inc.css
-
 /* Customization mode */
 
 %include ../shared/customizableui/customizeMode.inc.css
 
 /**
  * This next rule is a hack to disable subpixel anti-aliasing on all
  * labels during the customize mode transition. Subpixel anti-aliasing
  * on Windows with Direct2D layers acceleration is particularly slow to