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

device/power_save_blocker/power_save_blocker_ozone.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 "content/browser/power_save_blocker_impl.h"
+#include "device/power_save_blocker/power_save_blocker_impl.h"
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 
-namespace content {
+namespace device {
 
 // TODO(derat): Consider renaming this file; '_ozone' is a misnomer as power
 // save is OS-specific, not display-system-specific.  This implementation
 // ends up being used for non-ChromeOS Ozone platforms such as Chromecast.
 // See crbug.com/495661 for more detail.
 class PowerSaveBlockerImpl::Delegate
     : public base::RefCountedThreadSafe<PowerSaveBlockerImpl::Delegate> {
  public:
   Delegate() {}
 
  private:
   friend class base::RefCountedThreadSafe<Delegate>;
   virtual ~Delegate() {}
 
   DISALLOW_COPY_AND_ASSIGN(Delegate);
 };
 
 PowerSaveBlockerImpl::PowerSaveBlockerImpl(
     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()),
       ui_task_runner_(ui_task_runner),
       blocking_task_runner_(blocking_task_runner) {}
 
-PowerSaveBlockerImpl::~PowerSaveBlockerImpl() { }
+PowerSaveBlockerImpl::~PowerSaveBlockerImpl() {}
 
-}  // namespace content
+}  // namespace device