Cleanup: Remove unneeded forward declarations from remoting.

remoting/client/plugin/pepper_view_proxy.h

 // Copyright (c) 2011 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.
 
 // PepperViewProxy is used to invoke PepperView object on pepper thread. It
 // has the same interface as PepperView. When a method calls is received on
 // any chromoting threads it delegates the method call to pepper thread.
 // It also provide a detach mechanism so that when PepperView object is
 // destroyed PepperViewProxy will not call it anymore. This is important in
 // providing a safe shutdown of ChromotingInstance and PepperView.
 
 // This object is accessed on chromoting threads and pepper thread. The internal
 // PepperView object is only accessed on pepper thread so as the Detach() method
 // call.
 
 #ifndef REMOTING_CLIENT_PLUGIN_PEPPER_VIEW_PROXY_H_
 #define REMOTING_CLIENT_PLUGIN_PEPPER_VIEW_PROXY_H_
 
 #include "base/memory/ref_counted.h"
 #include "remoting/client/plugin/pepper_view.h"
 
 namespace base {
 class MessageLoopProxy;
 }  // namespace base
 
 namespace remoting {
 
 class ChromotingInstance;
-class ClientContext;
 
 class PepperViewProxy : public base::RefCountedThreadSafe<PepperViewProxy>,
                         public ChromotingView,
                         public FrameConsumer {
  public:
   PepperViewProxy(ChromotingInstance* instance, PepperView* view,
                   base::MessageLoopProxy* plugin_message_loop);
   virtual ~PepperViewProxy();
 
   // ChromotingView implementation.
@@ skipping 39 matching lines @@
   PepperView* view_;
 
   scoped_refptr<base::MessageLoopProxy> plugin_message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperViewProxy);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_PLUGIN_PEPPER_VIEW_PROXY_H_