Initial implementation of API WakeLock.

content/browser/wake_lock/wake_lock_manager.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_WAKE_LOCK_MANAGER_H_
+#define CONTENT_BROWSER_WAKE_LOCK_WAKE_LOCK_MANAGER_H_
+
+#include <set>
+#include "base/memory/singleton.h"
+
+namespace content {
+
+class Lock;
+
+class WakeLockManager {
+ public:
+  static WakeLockManager* GetInstance();
+
+  void createScreenLock(int render_process_id, int routed_id);
+  bool releaseScreenLock(int render_process_id, int routed_id);
+
+  // Used for both tab switching and minimizing/maximizing browser
+  void tabWasShown(int render_process_id, int routed_id);
+  void tabWasHidden(int render_process_id, int routed_id);
+
+  void createWebContentsObserver(int render_process_id, int routed_id);
+
+  virtual ~WakeLockManager();
+
+ private:
+  friend struct DefaultSingletonTraits<WakeLockManager>;
+  WakeLockManager();
+  void tabChangeVisibility(int render_process_id, int routed_id, bool visible);
+  Lock* getLock(int render_process_if, int routed_id);
+
+  // TODO(redchenko): need smart pointer
+  std::set<Lock*> locks_;
+
+  DISALLOW_COPY_AND_ASSIGN(WakeLockManager);
+};
+}
+
+#endif  // CONTENT_BROWSER_WAKE_LOCK_WAKE_LOCK_MANAGER_H_