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diff --git a/Source/WebCore/page/PointerLockController.h b/Source/WebCore/page/PointerLockController.h
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+++ b/Source/WebCore/page/PointerLockController.h
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+/*
+ * Copyright (C) 2012 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef PointerLockController_h
+#define PointerLockController_h
+
+#if ENABLE(POINTER_LOCK)
+
+#include <wtf/RefPtr.h>
+#include <wtf/text/AtomicString.h>
+
+namespace WebCore {
+
+class Element;
+class Page;
+class PlatformMouseEvent;
+class VoidCallback;
+
+class PointerLockController {
+    WTF_MAKE_NONCOPYABLE(PointerLockController);
+    WTF_MAKE_FAST_ALLOCATED;
+public:
+    static PassOwnPtr<PointerLockController> create(Page*);
+
+    void requestPointerLock(Element* target, PassRefPtr<VoidCallback> successCallback, PassRefPtr<VoidCallback> failureCallback);
+    void requestPointerUnlock();
+    bool isLocked();
+
+    void didAcquirePointerLock();
+    void didNotAcquirePointerLock();
+    void didLosePointerLock();
+    void dispatchLockedMouseEvent(const PlatformMouseEvent&, const AtomicString& eventType);
+
+private:
+    explicit PointerLockController(Page*);
+    Page* m_page;
+    RefPtr<Element> m_element;
+    RefPtr<VoidCallback> m_successCallback;
+    RefPtr<VoidCallback> m_failureCallback;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(POINTER_LOCK)
+
+#endif // PointerLockController_h