Convert the PluginResource to be refcounted.

ppapi/proxy/plugin_resource.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_PROXY_PLUGIN_RESOURCE_H_
 #define PPAPI_PROXY_PLUGIN_RESOURCE_H_
 
 #include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/host_resource.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/shared_impl/resource_object_base.h"
 
 // If you inherit from resource, make sure you add the class name here.
 #define FOR_ALL_PLUGIN_RESOURCES(F)                   \
   F(Audio) \
   F(AudioConfig) \
@@ skipping 19 matching lines @@
   F(VideoDecoder)
 
 namespace pp {
 namespace proxy {
 
 // Forward declaration of Resource classes.
 #define DECLARE_RESOURCE_CLASS(RESOURCE) class RESOURCE;
 FOR_ALL_PLUGIN_RESOURCES(DECLARE_RESOURCE_CLASS)
 #undef DECLARE_RESOURCE_CLASS
 
-class PluginResource : public ::ppapi::ResourceObjectBase {
+class PluginResource : public ::ppapi::ResourceObjectBase,
+                       public base::RefCounted<PluginResource> {
  public:
   PluginResource(const HostResource& resource);
   virtual ~PluginResource();
 
   // Returns NULL if the resource is invalid or is a different type.
   template<typename T> static T* GetAs(PP_Resource res) {
     PluginResource* resource =
         PluginResourceTracker::GetInstance()->GetResourceObject(res);
     return resource ? resource->Cast<T>() : NULL;
   }
@@ skipping 32 matching lines @@
   template <> inline Type* PluginResource::Cast<Type>() {  \
       return As##Type();                             \
   }
 FOR_ALL_PLUGIN_RESOURCES(DEFINE_RESOURCE_CAST)
 #undef DEFINE_RESOURCE_CAST
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PROXY_PLUGIN_RESOURCE_H_