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

chrome/browser/extensions/extension_bookmarks_module.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/browser/extensions/extension_bookmarks_module.h"
 
 #include "base/json_writer.h"
 #include "base/string_util.h"
 #include "chrome/browser/bookmarks/bookmark_codec.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
@@ skipping 136 matching lines @@
 void ExtensionBookmarkEventRouter::Observe(BookmarkModel* model) {
   if (models_.find(model) == models_.end()) {
     model->AddObserver(this);
     models_.insert(model);
   }
 }
 
 void ExtensionBookmarkEventRouter::DispatchEvent(Profile *profile,
                                                  const char* event_name,
                                                  const std::string json_args) {
-  ExtensionMessageService::GetInstance(profile->GetRequestContext())->
-      DispatchEventToRenderers(event_name, json_args);
+  if (profile->GetExtensionMessageService()) {
+    profile->GetExtensionMessageService()->
+        DispatchEventToRenderers(event_name, json_args);
+  }
 }
 
 void ExtensionBookmarkEventRouter::Loaded(BookmarkModel* model) {
   // TODO(erikkay): Perhaps we should send this event down to the extension
   // so they know when it's safe to use the API?
 }
 
 void ExtensionBookmarkEventRouter::BookmarkNodeMoved(
     BookmarkModel* model,
     const BookmarkNode* old_parent,
@@ skipping 357 matching lines @@
   }
   if (node == model->root_node() ||
       node == model->other_node() ||
       node == model->GetBookmarkBarNode()) {
     error_ = keys::kModifySpecialError;
     return false;
   }
   model->SetTitle(node, title);
   return true;
 }