Remove use of deprecated MessageLoop methods in chrome/.

chrome/browser/apps/app_shim/app_shim_handler_mac.cc

 // 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.
 
 #include "chrome/browser/apps/app_shim/app_shim_handler_mac.h"
 
 #include <map>
 
 #include "base/bind.h"
+#include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/singleton.h"
-#include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/apps/app_window_registry_util.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 
 namespace apps {
 
@@ skipping 33 matching lines @@
 
   void SetDefaultHandler(AppShimHandler* handler) {
     DCHECK_NE(default_handler_ == NULL, handler == NULL);
     default_handler_ = handler;
   }
 
   void MaybeTerminate() {
     if (!browser_session_running_) {
       // Post this to give AppWindows a chance to remove themselves from the
       // registry.
-      base::MessageLoop::current()->PostTask(
+      base::ThreadTaskRunnerHandle::Get()->PostTask(
           FROM_HERE, base::Bind(&TerminateIfNoAppWindows));
     }
   }
 
   bool ShouldRestoreSession() {
     return !browser_session_running_;
   }
 
  private:
   friend struct base::DefaultSingletonTraits<AppShimHandlerRegistry>;
@@ skipping 68 matching lines @@
 void AppShimHandler::MaybeTerminate() {
   AppShimHandlerRegistry::GetInstance()->MaybeTerminate();
 }
 
 // static
 bool AppShimHandler::ShouldRestoreSession() {
   return AppShimHandlerRegistry::GetInstance()->ShouldRestoreSession();
 }
 
 }  // namespace apps