Remove calls to deprecated MessageLoop methods in ui.

ui/base/cocoa/menu_controller_unittest.mm

 // Copyright 2013 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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #import "ui/base/cocoa/menu_controller.h"
 #include "ui/base/models/simple_menu_model.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/test/cocoa_test_event_utils.h"
 #include "ui/gfx/image/image.h"
 #import "ui/gfx/test/ui_cocoa_test_helper.h"
 #include "ui/resources/grit/ui_resources.h"
@@ skipping 361 matching lines @@
   // When control returns back to here, the menu will have finished running its
   // loop and will have closed itself (see Delegate::MenuWillShow).
   EXPECT_TRUE(delegate.did_show_);
 
   // When the menu tells the Model it closed, the Model posts a task to notify
   // the delegate. But since this is a test and there's no running MessageLoop,
   // |did_close_| will remain false until we pump the task manually.
   EXPECT_FALSE(delegate.did_close_);
 
   // Pump the task that notifies the delegate.
-  message_loop.RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
 
   // Expect that the delegate got notified properly.
   EXPECT_TRUE(delegate.did_close_);
 }
 
 }  // namespace
 
 }  // namespace ui