Add Worker support for FileSystem API.

chrome/worker/webworker_stub_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_WORKER_WEBWORKER_STUB_BASE_H_
 #define CHROME_WORKER_WEBWORKER_STUB_BASE_H_
 #pragma once
 
+#include "base/scoped_ptr.h"
 #include "chrome/worker/webworkerclient_proxy.h"
 #include "chrome/worker/worker_webapplicationcachehost_impl.h"
 #include "ipc/ipc_channel.h"
 
 // This class is the common base class for both WebWorkerStub and
 // WebSharedWorkerStub and contains common setup/teardown functionality.
 class WebWorkerStubBase : public IPC::Channel::Listener {
  public:
   WebWorkerStubBase(int route_id,
                     const WorkerAppCacheInitInfo& appcache_init_info);
   virtual ~WebWorkerStubBase();
 
   // Invoked when the WebWorkerClientProxy is shutting down.
   void Shutdown();
 
   // Called after terminating the worker context to make sure that the worker
   // actually terminates (is not stuck in an infinite loop).
   void EnsureWorkerContextTerminates();
 
   WebWorkerClientProxy* client() { return &client_; }
 
   const WorkerAppCacheInitInfo& appcache_init_info() const {
     return appcache_init_info_;
   }
+
+  // Returns the script url of this worker.
+  virtual const GURL& url() const = 0;
+
  private:
   int route_id_;
   WorkerAppCacheInitInfo appcache_init_info_;
 
   // WebWorkerClient that responds to outgoing API calls from the worker object.
   WebWorkerClientProxy client_;
 
   DISALLOW_COPY_AND_ASSIGN(WebWorkerStubBase);
 };
 
 #endif  // CHROME_WORKER_WEBWORKER_STUB_BASE_H_