content: Cleanup class/struct forward declarations

content/renderer/service_worker/embedded_worker_dispatcher.h

 // Copyright 2013 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 CONTENT_RENDERER_SERVICE_WORKER_EMBEDDED_WORKER_DISPATCHER_H_
 #define CONTENT_RENDERER_SERVICE_WORKER_EMBEDDED_WORKER_DISPATCHER_H_
 
 #include <map>
 #include <memory>
 
 #include "base/id_map.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "content/child/scoped_child_process_reference.h"
 #include "content/public/common/console_message_level.h"
 #include "ipc/ipc_listener.h"
 
-class GURL;
-
 namespace blink {
 
 class WebEmbeddedWorker;
 
 }  // namespace blink
 
 namespace content {
 
 class EmbeddedWorkerDevToolsAgent;
 class ServiceWorkerContextClient;
@@ skipping 51 matching lines @@
   IDMap<WorkerWrapper, IDMapOwnPointer> workers_;
   std::map<int /* embedded_worker_id */, base::TimeTicks> stop_worker_times_;
   base::WeakPtrFactory<EmbeddedWorkerDispatcher> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SERVICE_WORKER_EMBEDDED_WORKER_DISPATCHER_H_