[Sync] Add type conversion constructor for WeakHandle

chrome/browser/ui/webui/sync_internals_ui.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 "chrome/browser/ui/webui/sync_internals_ui.h"
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 95 matching lines @@
     ListValue return_args;
     DictionaryValue* about_info = new DictionaryValue();
     return_args.Append(about_info);
     ProfileSyncService* service = GetProfileSyncService(GetProfile());
     sync_ui_util::ConstructAboutInformation(service, about_info);
     HandleJsReply(name, JsArgList(&return_args));
   } else {
     if (js_controller_.get()) {
       js_controller_->ProcessJsMessage(
           name, args,
-          WeakHandle<JsReplyHandler>(weak_ptr_factory_.GetWeakPtr()));
+          MakeWeakHandle(weak_ptr_factory_.GetWeakPtr()));
     } else {
       LOG(WARNING) << "No sync service; dropping message " << name
                    << " with args " << args.ToString();
     }
   }
 }
 
 void SyncInternalsUI::HandleJsEvent(
     const std::string& name, const JsEventDetails& details) {
   VLOG(1) << "Handling event: " << name << " with details "
           << details.ToString();
   const std::string& event_handler = "chrome.sync." + name + ".fire";
   std::vector<const Value*> arg_list(1, &details.Get());
   CallJavascriptFunction(event_handler, arg_list);
 }
 
 void SyncInternalsUI::HandleJsReply(
     const std::string& name, const JsArgList& args) {
   VLOG(1) << "Handling reply for " << name << " message with args "
           << args.ToString();
   const std::string& reply_handler = "chrome.sync." + name + ".handleReply";
   std::vector<const Value*> arg_list(args.Get().begin(), args.Get().end());
   CallJavascriptFunction(reply_handler, arg_list);
 }