Bug 1434584 - Make icon in MacOS nsStandaloneNativeMenu a template image. r=mstange

MozReview-Commit-ID: G0s0rUyiKMx

--HG--
extra : rebase_source : 80b1dc28641b30a75e6419d335ba089c0e747119

widget/cocoa/nsStandaloneNativeMenu.mm

@@ -201,7 +201,11 @@ void
 nsStandaloneNativeMenu::IconUpdated()
 {
   if (mContainerStatusBarItem) {
-    [mContainerStatusBarItem setImage:[mMenu->NativeMenuItem() image]];
+    NSImage* menuImage = [mMenu->NativeMenuItem() image];
+    if (menuImage) {
+      [menuImage setTemplate:true];
+    }
+    [mContainerStatusBarItem setImage:menuImage];
   }
 }