Initial implementation of API WakeLock.

public/platform/WebWakeLockClient.h

Index: public/platform/WebWakeLockClient.h
diff --git a/public/platform/WebWakeLockClient.h b/public/platform/WebWakeLockClient.h
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index 0000000000000000000000000000000000000000..dc9b1847ea16d7efbb46895ca1c63e3643332877
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+++ b/public/platform/WebWakeLockClient.h
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+// 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 WebWakeLockClient_h
+#define WebWakeLockClient_h
+
+#include "public/platform/WebWakeLockType.h"
+#include "public/web/WebSecurityOrigin.h"
+
+namespace blink {
+
+class WebWakeLockRequestCallback;
+
+class WebWakeLockClient {
+public:
+    virtual ~WebWakeLockClient() { }
+
+    virtual void requestWakeLock(WebWakeLockType, int requestId, WebSecurityOrigin) = 0;
+    virtual void requestWakeUnlock(WebWakeLockType, int requestId) = 0;
+
+    virtual void wakeLockDestroyed() = 0;
+    virtual void setRequestCallback(WebWakeLockRequestCallback*) = 0;
+};
+
+} // namespace blink
+
+#endif