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

content/browser/wake_lock/wake_lock_service_context.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_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_
 #define CONTENT_BROWSER_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_
 
 #include <memory>
 #include <set>
 #include <utility>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/wake_lock/wake_lock_service_impl.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 
 #if defined(OS_ANDROID)
 #include "ui/android/view_android.h"
 #endif  // OS_ANDROID
 
+namespace device {
+class PowerSaveBlocker;
+}  // namespace device
+
 namespace content {
 
-class PowerSaveBlocker;
 class RenderFrameHost;
 class WebContents;
 
 class CONTENT_EXPORT WakeLockServiceContext : public WebContentsObserver {
  public:
   explicit WakeLockServiceContext(WebContents* web_contents);
   ~WakeLockServiceContext() override;
 
   // Creates a WakeLockServiceImpl that is strongly bound to |request|.
   void CreateService(
@@ skipping 19 matching lines @@
  private:
   void CreateWakeLock();
   void RemoveWakeLock();
   void UpdateWakeLock();
 
   // Set of (render_process_id, render_frame_id) pairs identifying all
   // RenderFrames requesting wake lock.
   std::set<std::pair<int, int>> frames_requesting_lock_;
 
   // The actual power save blocker for screen.
-  std::unique_ptr<PowerSaveBlocker> wake_lock_;
+  std::unique_ptr<device::PowerSaveBlocker> wake_lock_;
 #if defined(OS_ANDROID)
   std::unique_ptr<base::WeakPtrFactory<ui::ViewAndroid>> view_weak_factory_;
 #endif
 
   base::WeakPtrFactory<WakeLockServiceContext> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WakeLockServiceContext);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_