Initial implementation of API WakeLock.

Source/modules/wake_lock/NavigatorWakeLock.h

+// Copyright 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 NavigatorWakeLock_h
+#define NavigatorWakeLock_h
+
+#include "platform/Supplementable.h"
+#include "platform/heap/Handle.h"
+
+namespace blink {
+
+class Navigator;
+class ScriptState;
+class WakeLock;
+
+class NavigatorWakeLock FINAL
+    : public NoBaseWillBeGarbageCollectedFinalized<NavigatorWakeLock>
+    , public WillBeHeapSupplement<Navigator> {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorWakeLock);
+public:
+    virtual ~NavigatorWakeLock();
+    static NavigatorWakeLock& from(Navigator&);
+
+    static WakeLock* wakeLock(ScriptState*, Navigator&);
+    WakeLock* wakeLock(ScriptState*);
+
+    void trace(Visitor*);
+
+private:
+    NavigatorWakeLock();
+    static const char* supplementName();
+
+    RefPtrWillBeMember<WakeLock> m_wakeLock;
+};
+
+} // namespace blink
+
+#endif // NavigatorWakeLock_h