Convert more interfaces to the new thunk system.

webkit/plugins/ppapi/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 "webkit/plugins/ppapi/resource_tracker.h"
 
 #include <limits>
 #include <set>
 
 #include "base/logging.h"
@@ skipping 272 matching lines @@
     case pp::proxy::INTERFACE_ID_RESOURCE_CREATION:
       proxy.reset(new ResourceCreationImpl(instance));
       break;
     default:
       NOTREACHED();
   }
 
   return proxy.get();
 }
 
+PP_Instance ResourceTracker::GetInstanceForResource(PP_Resource pp_resource) {
+  scoped_refptr<Resource> resource(GetResource(pp_resource));
+  if (!resource.get())
+    return 0;
+  return resource->instance()->pp_instance();
+}
+
 scoped_refptr<Var> ResourceTracker::GetVar(int32 var_id) const {
   DLOG_IF(ERROR, !CheckIdType(var_id, PP_ID_TYPE_VAR))
       << var_id << " is not a PP_Var ID.";
   VarMap::const_iterator result = live_vars_.find(var_id);
   if (result == live_vars_.end())
     return scoped_refptr<Var>();
   return result->second.first;
 }
 
 bool ResourceTracker::AddRefVar(int32 var_id) {
@@ skipping 112 matching lines @@
 
 // static
 void ResourceTracker::ClearSingletonOverride() {
   DCHECK(singleton_override_);
   singleton_override_ = NULL;
 }
 
 }  // namespace ppapi
 }  // namespace webkit