content: Cleanup class/struct forward declarations

content/renderer/pepper/resource_converter.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_PEPPER_RESOURCE_CONVERTER_H_
 #define CONTENT_RENDERER_PEPPER_RESOURCE_CONVERTER_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "content/renderer/pepper/host_resource_var.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_var.h"
 #include "v8/include/v8.h"
 
 namespace IPC {
 class Message;
 }
 
-namespace ppapi {
-class ScopedPPVar;
-}
-
 namespace content {
 
 // This class is responsible for converting V8 vars to Pepper resources.
 class CONTENT_EXPORT ResourceConverter {
  public:
   virtual ~ResourceConverter();
 
   // Reset the state of the resource converter.
   virtual void Reset() = 0;
 
@@ skipping 63 matching lines @@
   // conveniently passed to |CreateBrowserResourceHosts|.
   std::vector<IPC::Message> browser_host_create_messages_;
   // A list of the resource vars associated with browser hosts.
   std::vector<scoped_refptr<HostResourceVar> > browser_vars_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceConverterImpl);
 };
 
 }  // namespace content
 #endif  // CONTENT_RENDERER_PEPPER_RESOURCE_CONVERTER_H_