Reland of 'Move content/browser/power_save_blocker to //device/power_save_blocker'

device/power_save_blocker/power_save_blocker_impl.cc

 // Copyright (c) 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 "content/browser/power_save_blocker_impl.h"
+#include "device/power_save_blocker/power_save_blocker_impl.h"
 
 #include "build/build_config.h"
 
-namespace content {
+namespace device {
 
 PowerSaveBlocker::~PowerSaveBlocker() {}
 
 // static
 std::unique_ptr<PowerSaveBlocker> PowerSaveBlocker::CreateWithTaskRunners(
     PowerSaveBlocker::PowerSaveBlockerType type,
     PowerSaveBlocker::Reason reason,
     const std::string& description,
     scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> blocking_task_runner) {
   return std::unique_ptr<PowerSaveBlocker>(new PowerSaveBlockerImpl(
       type, reason, description, ui_task_runner, blocking_task_runner));
 }
 
-}  // namespace content
+}  // namespace device