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

content/browser/media/capture/aura_window_capture_machine.h

 // Copyright 2015 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.
 
 #ifndef CONTENT_BROWSER_MEDIA_CAPTURE_AURA_WINDOW_CAPTURE_MACHINE_H_
 #define CONTENT_BROWSER_MEDIA_CAPTURE_AURA_WINDOW_CAPTURE_MACHINE_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/media/capture/cursor_renderer_aura.h"
 #include "media/capture/content/screen_capture_device_core.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 #include "ui/base/cursor/cursors_aura.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_animation_observer.h"
 
 namespace cc {
+class CopyOutputResult;
+}  // namespace cc
 
-class CopyOutputResult;
-
-}  // namespace cc
+namespace device {
+class PowerSaveBlocker;
+}  // namespace device
 
 namespace display_compositor {
 class ReadbackYUVInterface;
 }
 
 namespace content {
 
-class PowerSaveBlocker;
-
 class AuraWindowCaptureMachine
     : public media::VideoCaptureMachine,
       public aura::WindowObserver,
       public ui::CompositorAnimationObserver {
  public:
   AuraWindowCaptureMachine();
   ~AuraWindowCaptureMachine() override;
 
   // VideoCaptureMachine overrides.
   void Start(const scoped_refptr<media::ThreadSafeCaptureOracle>& oracle_proxy,
@@ skipping 73 matching lines @@
 
   // YUV readback pipeline.
   std::unique_ptr<display_compositor::ReadbackYUVInterface>
       yuv_readback_pipeline_;
 
   // Renders mouse cursor on frame.
   std::unique_ptr<content::CursorRendererAura> cursor_renderer_;
 
   // TODO(jiayl): Remove power_save_blocker_ when there is an API to keep the
   // screen from sleeping for the drive-by web.
-  std::unique_ptr<PowerSaveBlocker> power_save_blocker_;
+  std::unique_ptr<device::PowerSaveBlocker> power_save_blocker_;
 
   // WeakPtrs are used for the asynchronous capture callbacks passed to external
   // modules.  They are only valid on the UI thread and become invalidated
   // immediately when InternalStop() is called to ensure that no more captured
   // frames will be delivered to the client.
   base::WeakPtrFactory<AuraWindowCaptureMachine> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AuraWindowCaptureMachine);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_CAPTURE_AURA_WINDOW_CAPTURE_MACHINE_H_