chrome: Use base::MessageLoop. (Part 3)

chrome/browser/extensions/extension_test_message_listener.cc

 // Copyright (c) 2012 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_test_message_listener.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/extensions/api/test/test_api.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/test/base/ui_test_utils.h"
@@ skipping 45 matching lines @@
     function_ = content::Source<extensions::TestSendMessageFunction>(
         source).ptr();
     satisfied_ = true;
     registrar_.RemoveAll();  // Stop listening for more messages.
     if (!will_reply_) {
       function_->Reply(std::string());
       function_ = NULL;
     }
     if (waiting_) {
       waiting_ = false;
-      MessageLoopForUI::current()->Quit();
+      base::MessageLoopForUI::current()->Quit();
     }
   }
 }