Fixes 4218 - setIcon for older, fussy versions of Chrome

lib/icon.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 47 matching lines @@
   {
     if (opacity > 0.5)
       page.browserAction.setIcon("icons/abp-$size-notification-"
                                  + notificationType + ".png");
     else
       page.browserAction.setIcon("icons/abp-$size" +
                                  (whitelisted ? "-whitelisted" : "") + ".png");
   }
   else
   {
-    chrome.browserAction.setIcon({
+    page.browserAction._safeSetIcon({
       tabId: page.id,
       imageData: frames["" + opacity + whitelisted]
     });
   }
 }
 
 FilterNotifier.on("page.WhitelistingStateRevalidate", (page, filter) =>
 {
   whitelistedState.set(page, !!filter);
   if (canUpdateIcon)
@@ skipping 148 matching lines @@
           clearInterval(interval);
           resolve();
           return;
         }
 
         animateIcon(type, frames);
       }, 10000);
     });
   });
 };