--- a/browser/themes/shared/notification-icons.inc.css
+++ b/browser/themes/shared/notification-icons.inc.css
@@ -17,31 +17,17 @@
   height: 16px;
   margin-inline-start: 2px;
 }
 
 /* This class can be used alone or in combination with the class defining the
    type of icon displayed. This rule must be defined before the others in order
    for its list-style-image to be overridden. */
 .notification-anchor-icon {
-%ifdef MOZ_WIDGET_GTK
-  list-style-image: url(moz-icon://stock/gtk-dialog-info?size=16);
-%else
-  list-style-image: url(chrome://global/skin/icons/information-16.png);
-%endif
-}
-
-@media (min-resolution: 1.1dppx) {
-  .notification-anchor-icon {
-%ifdef MOZ_WIDGET_GTK
-    list-style-image: url(moz-icon://stock/gtk-dialog-info?size=dialog);
-%else
-    list-style-image: url(chrome://global/skin/icons/information-32.png);
-%endif
-  }
+  list-style-image: url(chrome://browser/skin/notification-icons.svg#default-info);
 }
 
 .notification-anchor-icon:not(.plugin-blocked):-moz-lwtheme,
 #blocked-permissions-container > .blocked-permission-icon:-moz-lwtheme {
   filter: url(chrome://global/skin/filters.svg#fill);
   fill: currentColor;
 }
 

--- a/browser/themes/shared/notification-icons.svg
+++ b/browser/themes/shared/notification-icons.svg
@@ -3,27 +3,26 @@
    - 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"
      class="fieldtext"
      width="32" height="32" viewBox="0 0 32 32">
 #include icon-colors.inc.svg
   <style>
-    use:not(:target) {
-      display: none;
-    }
+    :root > use:not(:target),
+    :root > g:not(:target),
     #strikeout {
       display: none;
     }
     .blocked:target ~ #strikeout {
       display: block;
     }
     .blocked {
-      clip-path: url(#clip);
+      clip-path: url(#blocked-clipPath);
     }
 
     #login-highlighted {
       fill: HighlightText;
       fill-opacity: 1;
     }
 
     #plugin-blocked,
@@ -59,21 +58,31 @@
     <path id="login-icon" d="m 2,26 0,4 6,0 0,-2 2,0 0,-2 1,0 0,-1 2,0 0,-3 2,0 2.5,-2.5 1.5,1.5 3,-3 a 8,8 0 1 0 -8,-8 l -3,3 2,2 z m 20,-18.1 a 2,2 0 1 1 0,0.2 z" />
     <path id="login-detailed-icon" d="m 1,27 0,3.5 a 0.5,0.5 0 0 0 0.5,0.5 l 5,0 a 0.5,0.5 0 0 0 0.5,-0.5 l 0,-1.5 1.5,0 a 0.5,0.5 0 0 0 0.5,-0.5 l 0,-1.5 1,0 a 0.5,0.5 0 0 0 0.5,-0.5 l 0,-1 1,0 a 0.5,0.5 0 0 0 0.5,-0.5 l 0,-2 2,0 2.5,-2.5 q 0.5,-0.5 1,0 l 1,1 c 0.5,0.5 1,0.5 1.5,-0.5 l 1,-2 a 9,9 0 1 0 -8,-8 l -2,1 c -1,0.5 -1,1 -0.5,1.5 l 1.5,1.5 q 0.5,0.5 0,1 z m 21,-19.1 a 2,2 0 1 1 0,0.2 z" />
     <path id="microphone-icon" d="m 8,14 0,4 a 8,8 0 0 0 6,7.7 l 0,2.3 -2,0 a 2,2 0 0 0 -2,2 l 12,0 a 2,2 0 0 0 -2,-2 l -2,0 0,-2.3 a 8,8 0 0 0 6,-7.7 l 0,-4 -2,0 0,4 a 6,6 0 0 1 -12,0 l 0,-4 z m 4,4 a 4,4 0 0 0 8,0 l 0,-12 a 4,4 0 0 0 -8,0 z" />
     <path id="microphone-detailed-icon" d="m 8,18 a 8,8 0 0 0 6,7.7 l 0,2.3 -1,0 a 3,2 0 0 0 -3,2 l 12,0 a 3,2 0 0 0 -3,-2 l -1,0 0,-2.3 a 8,8 0 0 0 6,-7.7 l 0,-4 a 1,1 0 0 0 -2,0 l 0,4 a 6,6 0 0 1 -12,0 l 0,-4 a 1,1 0 0 0 -2,0 z m 4,0 a 4,4 0 0 0 8,0 l 0,-12 a 4,4 0 0 0 -8,0 z" />
     <path id="plugin-icon" d="m 2,26 a 2,2 0 0 0 2,2 l 24,0 a 2,2 0 0 0 2,-2 l 0,-16 a 2,2 0 0 0 -2,-2 l -24,0 a 2,2 0 0 0 -2,2 z m 2,-20 10,0 0,-2 a 2,2 0 0 0 -2,-2 l -6,0 a 2,2 0 0 0 -2,2 z m 14,0 10,0 0,-2 a 2,2 0 0 0 -2,-2 l -6,0 a 2,2 0 0 0 -2,2 z" />
     <path id="popup-icon" d="m 2,24 a 4,4 0 0 0 4,4 l 8,0 a 10,10 0 0 1 -2,-4 l -4,0 a 2,2 0 0 1 -2,-2 l 0,-12 18,0 0,2 a 10,10 0 0 1 4,2 l 0,-8 a 4,4 0 0 0 -4,-4 l -18,0 a 4,4 0 0 0 -4,4 z m 12,-2.1 a 8,8 0 1 1 0,0.2 m 10.7,-4.3 a 5,5 0 0 0 -6.9,6.9 z m -5.4,8.4 a 5,5 0 0 0 6.9,-6.9 z" />
     <path id="screen-icon" d="m 2,18 a 2,2 0 0 0 2,2 l 2,0 0,-6 a 4,4 0 0 1 4,-4 l 14,0 0,-6 a 2,2 0 0 0 -2,-2 l -18,0 a 2,2 0 0 0 -2,2 z m 6,10 a 2,2 0 0 0 2,2 l 18,0 a 2,2 0 0 0 2,-2 l 0,-14 a 2,2 0 0 0 -2,-2 l -18,0 a 2,2 0 0 0 -2,2 z" />
 
-    <clipPath id="clip">
+    <clipPath id="blocked-clipPath">
       <path d="m 0,0 0,31 31,-31 z m 6,32 26,0 0,-26 z"/>
     </clipPath>
+
+    <mask id="i-mask" style="fill-opacity: 1;">
+      <rect fill="white" width="32" height="32"/>
+      <circle fill="black" cx="16" cy="9" r="2.5"/>
+      <rect fill="black" x="14" y="14" width="4" height="10" rx="2" ry="2"/>
+    </mask>
   </defs>
 
+  <g id="default-info">
+    <circle cx="16" cy="16" r="14" mask="url(#i-mask)"/>
+  </g>
+
   <use id="camera" xlink:href="#camera-icon" />
   <use id="camera-sharing" xlink:href="#camera-icon"/>
   <use id="camera-indicator" xlink:href="#camera-icon" />
   <use id="camera-blocked" class="blocked" xlink:href="#camera-icon" />
   <use id="desktop-notification" xlink:href="#desktop-notification-icon" />
   <use id="desktop-notification-blocked" class="blocked" xlink:href="#desktop-notification-icon" />
   <use id="geo-osx" xlink:href="#geo-osx-icon" />
   <use id="geo-osx-blocked" class="blocked" xlink:href="#geo-osx-icon" />