[PPAPI] ResourceVar now reference counts its PP_Resource in the plugin.

content/renderer/pepper/host_var_tracker.h

 // Copyright (c) 2012 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_HOST_VAR_TRACKER_H_
 #define CONTENT_RENDERER_PEPPER_HOST_VAR_TRACKER_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 37 matching lines @@
   // given NPObject for the given instance. See AddNPObjectVar above.
   ppapi::NPObjectVar* NPObjectVarForNPObject(PP_Instance instance,
                                              NPObject* np_object);
 
   // Returns the number of NPObjectVar's associated with the given instance.
   // Returns 0 if the instance isn't known.
   CONTENT_EXPORT int GetLiveNPObjectVarsForInstance(
       PP_Instance instance) const;
 
   // VarTracker public implementation.
+  virtual ppapi::ResourceVar* MakeResourceVar(PP_Resource pp_resource) OVERRIDE;
   virtual void DidDeleteInstance(PP_Instance instance) OVERRIDE;
 
   virtual int TrackSharedMemoryHandle(PP_Instance instance,
                                       base::SharedMemoryHandle file,
                                       uint32 size_in_bytes) OVERRIDE;
   virtual bool StopTrackingSharedMemoryHandle(int id,
                                               PP_Instance instance,
                                               base::SharedMemoryHandle* handle,
                                               uint32* size_in_bytes) OVERRIDE;
 
@@ skipping 30 matching lines @@
   typedef std::map<int, SharedMemoryMapEntry> SharedMemoryMap;
   SharedMemoryMap shared_memory_map_;
   uint32_t last_shared_memory_map_id_;
 
   DISALLOW_COPY_AND_ASSIGN(HostVarTracker);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_HOST_VAR_TRACKER_H_