Changed the extension.connect() API not to broadcast to all tabs. Added a

chrome/renderer/render_thread.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/render_thread.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 382 matching lines @@
       command_line.HasSwitch(switches::kNoJsRandomness)) {
     WebKit::registerExtension(extensions_v8::PlaybackExtension::Get());
   }
 
   if (RenderProcess::current()->initialized_media_library())
     WebKit::enableMediaPlayer();
 }
 
 void RenderThread::OnExtensionMessageInvoke(const std::string& function_name,
                                             const ListValue& args) {
-  RendererExtensionBindings::Invoke(function_name, args);
+  RendererExtensionBindings::Invoke(function_name, args, NULL);
 }
 
 void RenderThread::OnPurgePluginListCache() {
   // The call below will cause a GetPlugins call with refresh=true, but at this
   // point we already know that the browser has refreshed its list, so disable
   // refresh temporarily to prevent each renderer process causing the list to be
   // regenerated.
   plugin_refresh_allowed_ = false;
   WebKit::resetPluginCache();
   plugin_refresh_allowed_ = true;
 }