|  | /* | 
|  | * 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 WebLayerScrollClient_h | 
|  | #define WebLayerScrollClient_h | 
|  |  | 
|  | #include "WebCommon.h" | 
|  |  | 
|  | namespace blink { | 
|  |  | 
|  | // A client that is notified of scrolling on a WebLayer. | 
|  | class BLINK_PLATFORM_EXPORT WebLayerScrollClient { | 
|  | public: | 
|  | virtual void didScroll() = 0; | 
|  | protected: | 
|  | virtual ~WebLayerScrollClient() { } | 
|  | }; | 
|  |  | 
|  | } // namespace blink | 
|  |  | 
|  | #endif // WebLayerScrollClient_h |