--- a/browser/themes/pinstripe/browser.css
+++ b/browser/themes/pinstripe/browser.css
@@ -3090,17 +3090,16 @@ toolbarbutton.chevron > .toolbarbutton-m
   width: 64px;
   height: 64px;
   -moz-margin-end: 10px;
 }
 
 .popup-notification-icon[popupid="geolocation"] {
   list-style-image: url(chrome://browser/skin/Geolocation-64.png);
 }
-
 @media (min-resolution: 2dppx) {
   .popup-notification-icon[popupid="geolocation"] {
     list-style-image: url(chrome://browser/skin/Geolocation-64@2x.png);
   }
 }
 
 .popup-notification-icon[popupid="xpinstall-disabled"],
 .popup-notification-icon[popupid="addon-progress"],
@@ -3161,16 +3160,22 @@ toolbarbutton.chevron > .toolbarbutton-m
 .popup-notification-icon[popupid="webapps-install"] {
   list-style-image: url(chrome://browser/skin/webapps-64.png);
 }
 
 .popup-notification-icon[popupid="webRTC-sharingDevices"],
 .popup-notification-icon[popupid="webRTC-shareDevices"] {
   list-style-image: url(chrome://browser/skin/webRTC-shareDevice-64.png);
 }
+@media (min-resolution: 2dppx) {
+  .popup-notification-icon[popupid="webRTC-sharingDevices"],
+  .popup-notification-icon[popupid="webRTC-shareDevices"] {
+    list-style-image: url(chrome://browser/skin/webRTC-shareDevice-64@2x.png);
+  }
+}
 
 /* Popup Buttons */
 #identity-popup-more-info-button {
   @hudButton@
   margin: 10px 0 0;
   min-height: 0px;
 }
 

--- a/browser/themes/pinstripe/jar.mn
+++ b/browser/themes/pinstripe/jar.mn
@@ -66,16 +66,17 @@ browser.jar:
   skin/classic/browser/urlbar-history-dropmarker@2x.png
   skin/classic/browser/urlbar-arrow.png
   skin/classic/browser/urlbar-arrow@2x.png
   skin/classic/browser/urlbar-popup-blocked.png
   skin/classic/browser/urlbar-popup-blocked@2x.png
   skin/classic/browser/webRTC-shareDevice-16.png
   skin/classic/browser/webRTC-shareDevice-16@2x.png
   skin/classic/browser/webRTC-shareDevice-64.png
+  skin/classic/browser/webRTC-shareDevice-64@2x.png
   skin/classic/browser/downloads/buttons.png                (downloads/buttons.png)
   skin/classic/browser/downloads/download-glow.png          (downloads/download-glow.png)
   skin/classic/browser/downloads/download-glow@2x.png       (downloads/download-glow@2x.png)
   skin/classic/browser/downloads/download-notification-finish.png  (downloads/download-notification-finish.png)
   skin/classic/browser/downloads/download-notification-start.png  (downloads/download-notification-start.png)
   skin/classic/browser/downloads/download-summary.png       (downloads/download-summary.png)
   skin/classic/browser/downloads/downloads.css              (downloads/downloads.css)
   skin/classic/browser/downloads/allDownloadsViewOverlay.css (downloads/allDownloadsViewOverlay.css)

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