--- a/toolkit/themes/linux/mozapps/extensions/extensions.css
+++ b/toolkit/themes/linux/mozapps/extensions/extensions.css
@@ -396,17 +396,17 @@
 
 .icon {
   list-style-image: url("chrome://mozapps/skin/extensions/extensionGeneric.png");
   max-width: 48px;
   max-height: 48px;
 }
 
 .addon[active="false"] .icon {
-  filter: url("chrome://mozapps/skin/extensions/extensions.svg#greyscale");
+  filter: grayscale(1);
 }
 
 .addon-view[type="theme"] .icon {
   list-style-image: url("chrome://mozapps/skin/extensions/themeGeneric.png");
 }
 
 .addon-view[type="locale"] .icon {
   list-style-image: url("chrome://mozapps/skin/extensions/localeGeneric.png");

--- a/toolkit/themes/linux/mozapps/extensions/selectAddons.css
+++ b/toolkit/themes/linux/mozapps/extensions/selectAddons.css
@@ -141,17 +141,17 @@
 #confirm .addon {
   -moz-margin-start: 3em;
   -moz-box-align: center;
 }
 
 .addon:not([active]) .addon-icon,
 #disable-list .addon-icon,
 #incompatible-list .addon-icon {
-  filter: url("chrome://mozapps/skin/extensions/extensions.svg#greyscale");
+  filter: grayscale(1);
 }
 
 #footer {
   padding: 15px 12px;
   border-top: 2px solid;
   -moz-border-top-colors: ThreeDHighlight ThreeDLightShadow;
 }
 

--- a/toolkit/themes/osx/mozapps/extensions/extensions.css
+++ b/toolkit/themes/osx/mozapps/extensions/extensions.css
@@ -461,17 +461,17 @@
 
 .icon {
   list-style-image: url("chrome://mozapps/skin/extensions/extensionGeneric.png");
   max-width: 48px;
   max-height: 48px;
 }
 
 .addon[active="false"] .icon {
-  filter: url("chrome://mozapps/skin/extensions/extensions.svg#greyscale");
+  filter: grayscale(1);
 }
 
 .addon-view[type="theme"] .icon {
   list-style-image: url("chrome://mozapps/skin/extensions/themeGeneric.png");
 }
 
 .addon-view[type="locale"] .icon {
   list-style-image: url("chrome://mozapps/skin/extensions/localeGeneric.png");

deleted file mode 100644
--- a/toolkit/themes/osx/mozapps/extensions/extensions.svg
+++ /dev/null
@@ -1,10 +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">
-  <filter id="greyscale">
-    <feColorMatrix type="saturate" values="0"/>
-  </filter>
-</svg>

--- a/toolkit/themes/osx/mozapps/extensions/selectAddons.css
+++ b/toolkit/themes/osx/mozapps/extensions/selectAddons.css
@@ -140,17 +140,17 @@
 #confirm .addon {
   -moz-margin-start: 3em;
   -moz-box-align: center;
 }
 
 .addon:not([active]) .addon-icon,
 #disable-list .addon-icon,
 #incompatible-list .addon-icon {
-  filter: url("chrome://mozapps/skin/extensions/extensions.svg#greyscale");
+  filter: grayscale(1);
 }
 
 #footer {
   padding: 15px 12px;
   -moz-binding: url("chrome://global/content/bindings/general.xml#windowdragbox");
   -moz-appearance: statusbar;
 }
 

--- a/toolkit/themes/osx/mozapps/jar.mn
+++ b/toolkit/themes/osx/mozapps/jar.mn
@@ -42,17 +42,16 @@ toolkit.jar:
   skin/classic/mozapps/extensions/stripes-info-negative.png       (extensions/stripes-info-negative.png)
   skin/classic/mozapps/extensions/alerticon-warning.png           (extensions/alerticon-warning.png)
   skin/classic/mozapps/extensions/alerticon-error.png             (extensions/alerticon-error.png)
   skin/classic/mozapps/extensions/alerticon-info-positive.png     (extensions/alerticon-info-positive.png)
   skin/classic/mozapps/extensions/alerticon-info-negative.png     (extensions/alerticon-info-negative.png)
   skin/classic/mozapps/extensions/search.png                      (extensions/search.png)
   skin/classic/mozapps/extensions/about.css                       (extensions/about.css)
 * skin/classic/mozapps/extensions/extensions.css                  (extensions/extensions.css)
-  skin/classic/mozapps/extensions/extensions.svg                  (extensions/extensions.svg)
 * skin/classic/mozapps/extensions/selectAddons.css                (extensions/selectAddons.css)
   skin/classic/mozapps/extensions/update.css                      (extensions/update.css)
   skin/classic/mozapps/extensions/eula.css                        (extensions/eula.css)
   skin/classic/mozapps/extensions/blocklist.css                   (extensions/blocklist.css)
 * skin/classic/mozapps/extensions/newaddon.css                    (extensions/newaddon.css)
   skin/classic/mozapps/passwordmgr/key.png                        (passwordmgr/key.png)
   skin/classic/mozapps/passwordmgr/key-16.png                     (passwordmgr/key-16.png)
   skin/classic/mozapps/passwordmgr/key-16@2x.png                  (passwordmgr/key-16@2x.png)

--- a/toolkit/themes/windows/mozapps/extensions/extensions.css
+++ b/toolkit/themes/windows/mozapps/extensions/extensions.css
@@ -468,17 +468,17 @@
 
 .icon {
   list-style-image: url("chrome://mozapps/skin/extensions/extensionGeneric.png");
   max-width: 48px;
   max-height: 48px;
 }
 
 .addon[active="false"] .icon {
-  filter: url("chrome://mozapps/skin/extensions/extensions.svg#greyscale");
+  filter: grayscale(1);
 }
 
 
 .addon-view[type="theme"] .icon {
   list-style-image: url("chrome://mozapps/skin/extensions/themeGeneric.png");
 }
 
 .addon-view[type="locale"] .icon {

deleted file mode 100644
--- a/toolkit/themes/windows/mozapps/extensions/extensions.svg
+++ /dev/null
@@ -1,10 +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">
-  <filter id="greyscale">
-    <feColorMatrix type="saturate" values="0"/>
-  </filter>
-</svg>

--- a/toolkit/themes/windows/mozapps/extensions/selectAddons.css
+++ b/toolkit/themes/windows/mozapps/extensions/selectAddons.css
@@ -153,17 +153,17 @@
 #confirm .addon {
   -moz-margin-start: 3em;
   -moz-box-align: center;
 }
 
 .addon:not([active]) .addon-icon,
 #disable-list .addon-icon,
 #incompatible-list .addon-icon {
-  filter: url("chrome://mozapps/skin/extensions/extensions.svg#greyscale");
+  filter: grayscale(1);
 }
 
 #footer {
   padding: 15px 12px;
 }
 
 .progress-label,
 #footer-label {

--- a/toolkit/themes/windows/mozapps/jar.mn
+++ b/toolkit/themes/windows/mozapps/jar.mn
@@ -11,17 +11,16 @@ toolkit.jar:
         skin/classic/mozapps/downloads/downloadIcon.png            (downloads/downloadIcon.png)
         skin/classic/mozapps/downloads/downloads.css               (downloads/downloads.css)
         skin/classic/mozapps/downloads/unknownContentType.css      (downloads/unknownContentType.css)
         skin/classic/mozapps/extensions/about.css                  (extensions/about.css)
         skin/classic/mozapps/extensions/blocklist.css              (extensions/blocklist.css)
 *       skin/classic/mozapps/extensions/extensions.css             (extensions/extensions.css)
 *       skin/classic/mozapps/extensions/selectAddons.css           (extensions/selectAddons.css)
         skin/classic/mozapps/extensions/update.css                 (extensions/update.css)
-        skin/classic/mozapps/extensions/extensions.svg             (extensions/extensions.svg)
         skin/classic/mozapps/extensions/category-search.png        (extensions/category-search.png)
         skin/classic/mozapps/extensions/category-discover.png      (extensions/category-discover.png)
         skin/classic/mozapps/extensions/category-languages.png     (extensions/localeGeneric.png)
         skin/classic/mozapps/extensions/category-searchengines.png (extensions/category-searchengines.png)
         skin/classic/mozapps/extensions/category-extensions.png    (extensions/extensionGeneric.png)
         skin/classic/mozapps/extensions/category-themes.png        (extensions/themeGeneric.png)
         skin/classic/mozapps/extensions/category-plugins.png       (extensions/category-plugins.png)
         skin/classic/mozapps/extensions/category-service.png       (extensions/category-service.png)
@@ -94,17 +93,16 @@ toolkit.jar:
         skin/classic/aero/mozapps/downloads/downloadIcon.png               (downloads/downloadIcon-aero.png)
 *       skin/classic/aero/mozapps/downloads/downloads.css                  (downloads/downloads-aero.css)
         skin/classic/aero/mozapps/downloads/unknownContentType.css         (downloads/unknownContentType.css)
         skin/classic/aero/mozapps/extensions/about.css                     (extensions/about.css)
         skin/classic/aero/mozapps/extensions/blocklist.css                 (extensions/blocklist.css)
 *       skin/classic/aero/mozapps/extensions/extensions.css                (extensions/extensions-aero.css)
 *       skin/classic/aero/mozapps/extensions/selectAddons.css              (extensions/selectAddons-aero.css)
         skin/classic/aero/mozapps/extensions/update.css                    (extensions/update.css)
-        skin/classic/aero/mozapps/extensions/extensions.svg                (extensions/extensions.svg)
         skin/classic/aero/mozapps/extensions/category-search.png           (extensions/category-search.png)
         skin/classic/aero/mozapps/extensions/category-discover.png         (extensions/category-discover-aero.png)
         skin/classic/aero/mozapps/extensions/category-languages.png        (extensions/localeGeneric-aero.png)
         skin/classic/aero/mozapps/extensions/category-searchengines.png    (extensions/category-searchengines.png)
         skin/classic/aero/mozapps/extensions/category-extensions.png       (extensions/extensionGeneric-aero.png)
         skin/classic/aero/mozapps/extensions/category-themes.png           (extensions/themeGeneric-aero.png)
         skin/classic/aero/mozapps/extensions/category-plugins.png          (extensions/category-plugins-aero.png)
         skin/classic/aero/mozapps/extensions/category-service.png          (extensions/category-service.png)