Initial implementation of API WakeLock.

chrome/browser/wake_lock/wake_lock_preference.h

Index: chrome/browser/wake_lock/wake_lock_preference.h
diff --git a/chrome/browser/wake_lock/wake_lock_preference.h b/chrome/browser/wake_lock/wake_lock_preference.h
new file mode 100644
index 0000000000000000000000000000000000000000..88275a5b2a8fb2e81ce1b50c7d623ed67772b633
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+++ b/chrome/browser/wake_lock/wake_lock_preference.h
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+// 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 CHROME_BROWSER_WAKE_LOCK_WAKE_LOCK_PREFERENCE_H_
+#define CHROME_BROWSER_WAKE_LOCK_WAKE_LOCK_PREFERENCE_H_
+
+#include <string>
+#include "base/memory/scoped_ptr.h"
+
+class PrefService;
+
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
+class WakeLockPreference {
+ public:
+  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
+  static scoped_ptr<WakeLockPreference> createWakeLockPreference(
+    int render_process_id, int routed_id);
+
+  bool isSavedAllow(const std::string& key);
+  bool isAllowed(const std::string& key);
+  void setAllowed(const std::string& key, bool allowed);
+ private:
+  enum WakeLockPreferenceStatus {
+    WakeLockPreferenceNotFound = 0,
+    WakeLockPreferenceYes,
+    WakeLockPreferenceNo
+  };
+
+  WakeLockPreference(int render_process_id, int routed_id);
+  WakeLockPreferenceStatus getAllowed(const std::string& key);
+
+  PrefService* pref_service_;
+};
+
+#endif  // CHROME_BROWSER_WAKE_LOCK_WAKE_LOCK_PREFERENCE_H_