Bug 847984 - Metro icon for pop-up blocker notifications [r=rsilveira]

browser/metro/base/content/browser.js

@@ -1293,7 +1293,7 @@ var PopupBlockerObserver = {
 
           const priority = notificationBox.PRIORITY_WARNING_MEDIUM;
           notificationBox.appendNotification(message, "popup-blocked",
-                                             "",
+                                             "chrome://browser/skin/images/infobar-popup.png",
                                              priority, buttons);
         }
       }

browser/metro/theme/jar.mn

@@ -41,6 +41,7 @@ chrome.jar:
   skin/images/infobar-close.png             (images/infobar-close.png)
   skin/images/infobar-geolocation.png       (images/infobar-geolocation.png)
   skin/images/infobar-key.png               (images/infobar-key.png)
+  skin/images/infobar-popup.png             (images/infobar-popup.png)
   skin/images/firefox-watermark.png         (images/firefox-watermark.png)
   skin/images/flyout-back-button.png        (images/flyout-back-button.png)
   skin/images/about-footer.png              (images/about-footer.png)