Remove remaining calls to deprecated MessageLoop methods on Mac.

chrome/browser/ui/cocoa/panels/display_settings_provider_cocoa.mm

 // 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 "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
+#include "base/threading/thread_task_runner_handle.h"
 #import "chrome/browser/app_controller_mac.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/fullscreen.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/cocoa/last_active_browser_cocoa.h"
 #include "chrome/browser/ui/panels/display_settings_provider.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
@@ skipping 106 matching lines @@
   // Since the fullscreen result is already known here, we can pass it dierctly
   // to CheckFullScreenMode.
   bool is_fullscreen = *(content::Details<bool>(details)).ptr();
   CheckFullScreenMode(
       is_fullscreen ? ASSUME_FULLSCREEN_ON : ASSUME_FULLSCREEN_OFF);
 }
 
 void DisplaySettingsProviderCocoa::ActiveWorkSpaceChanged() {
   // The active workspace notification might be received earlier than the
   // browser window knows that it is not in active space.
-  base::MessageLoop::current()->PostDelayedTask(
+  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&DisplaySettingsProviderCocoa::CheckFullScreenMode,
-                 weak_factory_.GetWeakPtr(),
-                 PERFORM_FULLSCREEN_CHECK),
+                 weak_factory_.GetWeakPtr(), PERFORM_FULLSCREEN_CHECK),
       base::TimeDelta::FromMilliseconds(kCheckFullScreenDelayTimeMs));
 }
 
 }  // namespace
 
 // static
 DisplaySettingsProvider* DisplaySettingsProvider::Create() {
   return new DisplaySettingsProviderCocoa();
 }