Adding @@extension_id reserved message to l10n message map for extension....

chrome/renderer/extensions/renderer_extension_bindings.cc

 // Copyright (c) 2009 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 "chrome/renderer/extensions/renderer_extension_bindings.h"
 
 #include <map>
 #include <string>
 
 #include "app/resource_bundle.h"
@@ skipping 180 matching lines @@
       // from the correct source.
       RenderView* renderview = bindings_utils::GetRenderViewForCurrentContext();
       if (!renderview)
         return v8::Undefined();
 
       L10nMessagesMap messages;
       // A sync call to load message catalogs for current extension.
       renderview->Send(new ViewHostMsg_GetExtensionMessageBundle(
           extension_id, &messages));
 
-      if (messages.empty())
-        return v8::Undefined();
-
       // Save messages we got.
       ExtensionToL10nMessagesMap& l10n_messages_map =
           *GetExtensionToL10nMessagesMap();
       l10n_messages_map[extension_id] = messages;
 
       l10n_messages = GetL10nMessagesMap(extension_id);
     }
 
     std::string message_name = *v8::String::AsciiValue(args[0]);
     std::string message =
@@ skipping 85 matching lines @@
   return extension;
 }
 
 void RendererExtensionBindings::Invoke(const std::string& function_name,
                                        const ListValue& args,
                                        RenderView* renderview) {
   v8::HandleScope handle_scope;
   std::vector< v8::Handle<v8::Value> > argv = ListValueToV8(args);
   EventBindings::CallFunction(function_name, argv.size(), &argv[0], renderview);
 }