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 "core/frame/DOMWindowProperty.h"
+#include "platform/Supplementable.h"
+#include "platform/heap/Handle.h"
+
+namespace blink {
+
+class LocalFrame;
+class Navigator;
+class WakeLock;
+
+class NavigatorWakeLock FINAL
+    : public NoBaseWillBeGarbageCollectedFinalized<NavigatorWakeLock>
+    , public WillBeHeapSupplement<Navigator>
+    , public DOMWindowProperty {

[mlamouri (slow - plz ping), 2014/08/18 12:15:52]

I think you should be able to not depend on DOMWindowProperty, see below.

[redchenko, 2014/08/19 16:42:20]

Done.

+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorWakeLock);
+

[mlamouri (slow - plz ping), 2014/08/18 12:15:52]

nit: remove this empty line.

[redchenko, 2014/08/19 16:42:20]

Done.

+public:
+    virtual ~NavigatorWakeLock();
+    static NavigatorWakeLock& from(Navigator&);
+
+    static WakeLock* wakeLock(Navigator&);
+    WakeLock* wakeLock() const;
+
+    void trace(Visitor*);
+
+private:
+    NavigatorWakeLock(LocalFrame*);

[mlamouri (slow - plz ping), 2014/08/18 12:15:52]

I think this should be NavigatorWakeLock(). But if it is not, it should probably
be marked as explicit.

[redchenko, 2014/08/19 16:42:20]

Done.

+    static const char* supplementName();
+
+    mutable RefPtrWillBeMember<WakeLock> m_wakeLock;

[mlamouri (slow - plz ping), 2014/08/18 12:15:52]

Why is m_wakeLock mutable? If you have a good reason for that, you might want to
add a comment explaining it here.

[redchenko, 2014/08/19 16:42:20]

Done.

+};
+
+} // namespace WebCore
+
+#endif // NavigatorWakeLock_h