Initial implementation of API WakeLock.

content/browser/wake_lock/lock.h

+// Copyright (c) 2014 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_LOCK_H_
+#define CONTENT_BROWSER_WAKE_LOCK_LOCK_H_
+
+#include "content/browser/power_save_blocker_impl.h"
+
+namespace content {
+
+class WakeLockManager;
+
+class Lock {
+  public:
+    Lock(int render_process_id, int routed_id);
+    ~Lock();
+
+    void UnlockResource();
+
+    int GetRenderProcessId() const { return render_process_id_; }
+    int GetRoutedId() const { return routed_id_; }
+
+    friend class WakeLockManager;
+
+  protected:
+    void LockResource();
+    void ForceLockResource();
+    void ForceUnlockResource();
+
+    int render_process_id_;
+    int routed_id_;
+    bool unlocked_force_;
+    scoped_ptr<PowerSaveBlocker> blocker_;
+};
+}
+
+#endif  // CONTENT_BROWSER_WAKE_LOCK_LOCK_H_