merge fx-team to mozilla-central a=merge

browser/extensions/pocket/skin/windows/pocket.css

@@ -11,6 +11,6 @@
 
 @media (-moz-windows-theme: luna-silver) and (max-resolution: 1dppx) {
   #pocket-button {
-    list-style-image: url(chrome://pocket/skin/toolbar-lunaSilver.png)
+    list-style-image: url(Toolbar-lunaSilver.png);
   }
 }

browser/themes/linux/browser.css

@@ -578,10 +578,6 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
   list-style-image: url("moz-icon://stock/gtk-about?size=menu");
 }
 
-#javascriptConsole {
-  list-style-image: url("chrome://global/skin/console/console.png");
-}
-
 /* Primary toolbar buttons */
 
 :-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > .toolbarbutton-icon,

browser/themes/shared/plugin-doorhanger.inc.css

@@ -18,7 +18,7 @@
 }
 
 .center-item-warning-icon {
-  background-image: url("chrome://mozapps/skin/extensions/alerticon-info-negative.png");
+  background-image: url("chrome://mozapps/skin/extensions/alerticon-info-negative.svg");
   background-repeat: no-repeat;
   width: 16px;
   height: 15px;