Don't use base::MessageLoop::{Quit,QuitClosure} in chrome/

chrome/browser/extensions/extension_storage_monitor_browsertest.cc

 // Copyright 2014 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 <set>
 
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 46 matching lines @@
     waiting_ = false;
     return HasReceivedNotification();
   }
 
  private:
   // MessageCenterObserver implementation:
   void OnNotificationAdded(const std::string& notification_id) override {
     received_notifications_.insert(notification_id);
 
     if (waiting_ && HasReceivedNotification())
-      base::MessageLoopForUI::current()->Quit();
+      base::MessageLoopForUI::current()->QuitWhenIdle();
   }
 
   message_center::MessageCenter* message_center_;
   std::set<std::string> received_notifications_;
   std::string target_notification_id_;
   bool waiting_;
 };
 
 }  // namespace
 
@@ skipping 250 matching lines @@
       ScopedTestDialogAutoConfirm::ACCEPT);
   TestExtensionRegistryObserver observer(ExtensionRegistry::Get(profile()),
                                          extension->id());
   message_center::MessageCenter::Get()->ClickOnNotificationButton(
       GetNotificationId(extension->id()),
       ExtensionStorageMonitor::BUTTON_UNINSTALL);
   observer.WaitForExtensionUninstalled();
 }
 
 }  // namespace extensions