Remove calls to deprecated MessageLoop methods in device.

device/power_save_blocker/power_save_blocker_mac.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 "device/power_save_blocker/power_save_blocker.h"
 
 #include <IOKit/pwr_mgt/IOPMLib.h>
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/mac/scoped_cftyperef.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/thread.h"
 
 namespace device {
 namespace {
 
 // Power management cannot be done on the UI thread. IOPMAssertionCreate does a
 // synchronous MIG call to configd, so if it is called on the main thread the UI
 // is at the mercy of another process. See http://crbug.com/79559 and
@@ skipping 78 matching lines @@
 
 PowerSaveBlocker::PowerSaveBlocker(
     PowerSaveBlockerType type,
     Reason reason,
     const std::string& description,
     scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> blocking_task_runner)
     : delegate_(new Delegate(type, description)),
       ui_task_runner_(ui_task_runner),
       blocking_task_runner_(blocking_task_runner) {
-  g_power_thread.Pointer()->message_loop()->PostTask(
+  g_power_thread.Pointer()->task_runner()->PostTask(
       FROM_HERE, base::Bind(&Delegate::ApplyBlock, delegate_));
 }
 
 PowerSaveBlocker::~PowerSaveBlocker() {
-  g_power_thread.Pointer()->message_loop()->PostTask(
+  g_power_thread.Pointer()->task_runner()->PostTask(
       FROM_HERE, base::Bind(&Delegate::RemoveBlock, delegate_));
 }
 
 }  // namespace device