Unify var tracking between webkit and the proxy.

webkit/plugins/ppapi/npobject_var.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 WEBKIT_PLUGINS_PPAPI_NPOBJECT_VAR_H_
 #define WEBKIT_PLUGINS_PPAPI_NPOBJECT_VAR_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 21 matching lines @@
   // You should always use FromNPObject to create an NPObjectVar. This function
   // guarantees that we maintain the 1:1 mapping between NPObject and
   // NPObjectVar.
   NPObjectVar(PP_Module module, PP_Instance instance, NPObject* np_object);
 
   virtual ~NPObjectVar();
 
   // Var overrides.
   virtual NPObjectVar* AsNPObjectVar() OVERRIDE;
   virtual PP_Var GetPPVar() OVERRIDE;
+  virtual PP_VarType GetType() const OVERRIDE;
 
   // Returns the underlying NPObject corresponding to this NPObjectVar.
   // Guaranteed non-NULL.
   NPObject* np_object() const { return np_object_; }
 
   // Notification that the instance was deleted, the internal reference will be
   // zeroed out.
   void InstanceDeleted();
 
   // Possibly 0 if the object has outlived its instance.
@@ skipping 10 matching lines @@
   // Guaranteed non-NULL, this is the underlying object used by WebKit. We
   // hold a reference to this object.
   NPObject* np_object_;
 
   DISALLOW_COPY_AND_ASSIGN(NPObjectVar);
 };
 
 }  // namespace
 
 #endif  // WEBKIT_PLUGINS_PPAPI_NPOBJECT_VAR_H_