Issue 3258 - Blockable items: restore item flashing functionality

lib/requestNotifier.js

Index: lib/requestNotifier.js
===================================================================
--- a/lib/requestNotifier.js
+++ b/lib/requestNotifier.js
@@ -117,16 +117,34 @@ RequestNotifier.prototype =
   {
     this.listener.call(this.listenerObj, entry, this.scanComplete);
   },
 
   onComplete: function()
   {
     this.scanComplete = true;
     this.notifyListener(null);
+  },
+
+  /**
+   * Makes the nodes associated with the given requests blink.
+   * @param {number[]} requests  list of request IDs that were previously
+   *                             reported by this notifier.
+   * @param {Boolean} scrollToItem  if true, scroll to first node
+   */
+  flashNodes: function(requests, scrollToItem)
+  {
+    if (!requests)
+      requests = [];
+
+    messageManager.broadcastAsyncMessage("AdblockPlus:FlashNodes", {
+      notifierID: this.id,
+      requests,
+      scrollToItem
+    });
   }
 };
 
 RequestNotifier.storeSelection = function(/**Window*/ wnd, /**String*/ selection)
 {
   windowSelection.set(wnd.document, selection);
 };
 RequestNotifier.getSelection = function(/**Window*/ wnd) /**String*/