Move the refcounting from the proxy/impl resource object to the shared resource object base class.

ppapi/shared_impl/resource_object_base.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.
 
 #ifndef PPAPI_SHARED_IMPL_RESOURCE_OBJECT_BASE_H_
 #define PPAPI_SHARED_IMPL_RESOURCE_OBJECT_BASE_H_
 
 #include <stddef.h>  // For NULL.
 
+#include "base/memory/ref_counted.h"
+
 #define FOR_ALL_PPAPI_RESOURCE_APIS(F) \
   F(PPB_AudioConfig_API) \
   F(PPB_AudioTrusted_API) \
   F(PPB_Audio_API) \
   F(PPB_Broker_API) \
   F(PPB_Buffer_API) \
   F(PPB_BufferTrusted_API) \
   F(PPB_Context3D_API) \
   F(PPB_DirectoryReader_API) \
   F(PPB_FileChooser_API) \
@@ skipping 24 matching lines @@
 
 namespace ppapi {
 
 // Forward declare all the resource APIs.
 namespace thunk {
 #define DECLARE_RESOURCE_CLASS(RESOURCE) class RESOURCE;
 FOR_ALL_PPAPI_RESOURCE_APIS(DECLARE_RESOURCE_CLASS)
 #undef DECLARE_RESOURCE_CLASS
 }  // namespace thunk
 
-class ResourceObjectBase {
+class ResourceObjectBase : public base::RefCounted<ResourceObjectBase> {
  public:
   virtual ~ResourceObjectBase();
 
   // Dynamic casting for this object. Returns the pointer to the given type if
   // Inheritance-based dynamic casting for this object. Returns the pointer to
   // the given type if it's supported. Derived classes override the functions
   // they support to return the interface.
   #define DEFINE_TYPE_GETTER(RESOURCE) \
     virtual thunk::RESOURCE* As##RESOURCE();
   FOR_ALL_PPAPI_RESOURCE_APIS(DEFINE_TYPE_GETTER)
   #undef DEFINE_TYPE_GETTER
 
   // Template-based dynamic casting. See specializations below.
   template <typename T> T* GetAs() { return NULL; }
 };
 
 // Template-based dynamic casting. These specializations forward to the
 // AsXXX virtual functions to return whether the given type is supported.
 #define DEFINE_RESOURCE_CAST(RESOURCE) \
   template<> inline thunk::RESOURCE* ResourceObjectBase::GetAs() { \
     return As##RESOURCE(); \
   }
 FOR_ALL_PPAPI_RESOURCE_APIS(DEFINE_RESOURCE_CAST)
 #undef DEFINE_RESOURCE_CAST
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_RESOURCE_OBJECT_BASE_H_