Revert of Move content/browser/power_save_blocker to //device/power_save_blocker

content/browser/power_save_blocker_impl.h

+// 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.
+
+#ifndef CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_
+#define CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "base/sequenced_task_runner.h"
+#include "base/single_thread_task_runner.h"
+#include "build/build_config.h"
+#include "content/public/browser/power_save_blocker.h"
+
+#if defined(OS_ANDROID)
+#include "ui/android/view_android.h"
+#endif  // OS_ANDROID
+
+namespace content {
+
+class WebContents;
+
+class PowerSaveBlockerImpl : public PowerSaveBlocker {
+ public:
+  PowerSaveBlockerImpl(
+      PowerSaveBlockerType type,
+      Reason reason,
+      const std::string& description,
+      scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> blocking_task_runner);
+  ~PowerSaveBlockerImpl() override;
+
+#if defined(OS_ANDROID)
+  // On Android, the kPowerSaveBlockPreventDisplaySleep type of
+  // PowerSaveBlocker should associated with a View, so the blocker can be
+  // removed by the platform.
+  void InitDisplaySleepBlocker(
+      const base::WeakPtr<ui::ViewAndroid>& view_android);
+#endif
+
+ private:
+  class Delegate;
+
+  // Implementations of this class may need a second object with different
+  // lifetime than the RAII container, or additional storage. This member is
+  // here for that purpose. If not used, just define the class as an empty
+  // RefCounted (or RefCountedThreadSafe) like so to make it compile:
+  // class PowerSaveBlocker::Delegate
+  //     : public base::RefCounted<PowerSaveBlocker::Delegate> {
+  //  private:
+  //   friend class base::RefCounted<Delegate>;
+  //   ~Delegate() {}
+  // };
+  scoped_refptr<Delegate> delegate_;
+
+#if defined(USE_X11)
+  // Since display sleep prevention also implies system suspend prevention, for
+  // the Linux FreeDesktop API case, there needs to be a second delegate to
+  // block system suspend when screen saver / display sleep is blocked.
+  scoped_refptr<Delegate> freedesktop_suspend_delegate_;
+#endif
+
+  scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
+  scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(PowerSaveBlockerImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_