Fixed worker startup issue

chrome/renderer/webworker_base.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_RENDERER_WEBWORKER_BASE_H_
 #define CHROME_RENDERER_WEBWORKER_BASE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 24 matching lines @@
   // Returns true if the worker is running (can send messages to it).
   bool IsStarted();
 
   // Disconnects the worker (stops listening for incoming messages).
   virtual void Disconnect();
 
   // Sends a message to the worker thread (forwarded via the RenderViewHost).
   // If WorkerStarted() has not yet been called, message is queued.
   bool Send(IPC::Message*);
 
+  // Returns true if there are queued messages.
+  bool HasQueuedMessages() { return queued_messages_.size() != 0; }
+
   // Sends any messages currently in the queue.
   void SendQueuedMessages();
 
  protected:
   // Routing id associated with this worker - used to receive messages from the
   // worker, and also to route messages to the worker (WorkerService contains
   // a map that maps between these renderer-side route IDs and worker-side
   // routing ids).
   int route_id_;
 
   // The routing id for the RenderView that created this worker.
   int render_view_route_id_;
 
   ChildThread* child_thread_;
 
  private:
   // Stores messages that were sent before the StartWorkerContext message.
   std::vector<IPC::Message*> queued_messages_;
 };
 
 #endif  // CHROME_RENDERER_WEBWORKER_BASE_H_