Wake Lock API implementation (Blink part)

Source/core/dom/DocumentWakeLock.h

Index: Source/core/dom/DocumentWakeLock.h
diff --git a/Source/core/dom/DocumentWakeLock.h b/Source/core/dom/DocumentWakeLock.h
new file mode 100644
index 0000000000000000000000000000000000000000..bcb99c4a801e5ad16417c43a12c94b0ed60b1209
--- /dev/null
+++ b/Source/core/dom/DocumentWakeLock.h
@@ -0,0 +1,20 @@
+// Copyright 2015 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 DocumentWakeLock_h
+#define DocumentWakeLock_h
+
+namespace blink {
+
+class Document;
+
+class DocumentWakeLock {
+public:
+    static bool keepScreenAwake(Document&);
+    static void setKeepScreenAwake(Document&, bool);
+};
+
+} // namespace blink
+
+#endif // DocumentWakeLock_h