Unify var tracking between webkit and the proxy.

ppapi/proxy/plugin_resource_tracker.cc

 // 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.
 
 #include "ppapi/proxy/plugin_resource_tracker.h"
 
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 130 matching lines @@
 }
 
 PP_Instance PluginResourceTracker::GetInstanceForResource(
     PP_Resource resource) {
   ResourceMap::iterator found = resource_map_.find(resource);
   if (found == resource_map_.end())
     return 0;
   return found->second.resource->instance();
 }
 
-int32 PluginResourceTracker::AddVar(ppapi::Var* var) {
-  // TODO(brettw) implement this when the proxy uses the Var object in the
-  // plugin process.
-  NOTREACHED();
-  return 0;
-}
-
-scoped_refptr<ppapi::Var> PluginResourceTracker::GetVar(int32 var_id) const {
-  // TODO(brettw) implement this when the proxy uses the Var object in the
-  // plugin process.
-  NOTREACHED();
-  return scoped_refptr<ppapi::Var>();
-}
-
-bool PluginResourceTracker::AddRefVar(int32 var_id) {
-  // TODO(brettw) implement this when the proxy uses the Var object in the
-  // plugin process.
-  NOTREACHED();
-  return false;
-}
-
-bool PluginResourceTracker::UnrefVar(int32 var_id) {
-  // TODO(brettw) implement this when the proxy uses the Var object in the
-  // plugin process.
-  NOTREACHED();
-  return false;
+ppapi::VarTracker* PluginResourceTracker::GetVarTracker() {
+  return &var_tracker();
 }
 
 void PluginResourceTracker::ReleasePluginResourceRef(
     const PP_Resource& resource,
     bool notify_browser_on_release) {
   ResourceMap::iterator found = resource_map_.find(resource);
   if (found == resource_map_.end())
     return;
   found->second.ref_count--;
   if (found->second.ref_count == 0) {
@@ skipping 16 matching lines @@
     // tell the host about.
     if (notify_browser_on_release && dispatcher && !host_resource.is_null()) {
       dispatcher->Send(new PpapiHostMsg_PPBCore_ReleaseResource(
           INTERFACE_ID_PPB_CORE, host_resource));
     }
   }
 }
 
 }  // namespace proxy
 }  // namespace pp