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diff --git a/Source/WebKit/chromium/public/WebScopedUserGesture.h b/Source/WebKit/chromium/public/WebScopedUserGesture.h
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+/*
+ * Copyright (C) 2011 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER OR 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 WebScopedUserGesture_h
+#define WebScopedUserGesture_h
+
+#include "platform/WebPrivateOwnPtr.h"
+
+namespace WebCore {
+class UserGestureIndicator;
+}
+
+namespace WebKit {
+
+// An instance of this class, while kept alive, will indicate that we are in
+// the context of a known user gesture. To use, create one, perform whatever
+// actions were done under color of a known user gesture, and then delete it.
+// Usually this will be done on the stack.
+class WebScopedUserGesture {
+public:
+    WebScopedUserGesture() { initialize(); }
+    ~WebScopedUserGesture() { reset(); }
+
+private:
+    WEBKIT_EXPORT void initialize();
+    WEBKIT_EXPORT void reset();
+
+    WebPrivateOwnPtr<WebCore::UserGestureIndicator> m_indicator;
+};
+
+} // namespace WebKit
+
+#endif // WebScopedUserGesture_h