Merge 112364 - [chromium] Transfer wheel fling via WebCompositorInputHandlerClient

Source/WebKit/chromium/public/WebCompositorInputHandlerClient.h

 /*
  * 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:
  *
  * 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
@@ skipping 10 matching lines @@
  * 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 WebCompositorInputHandlerClient_h
 #define WebCompositorInputHandlerClient_h
 
 namespace WebKit {
 
+struct WebActiveWheelFlingParameters;
+
 class WebCompositorInputHandlerClient {
 public:
     // Callbacks invoked from the compositor thread.
     virtual void willShutdown() = 0;
 
     // Exactly one of the following two callbacks will be invoked after every call to WebCompositor::handleInputEvent():
 
     // Called when the WebCompositor handled the input event and no further processing is required.
     virtual void didHandleInputEvent() = 0;
 
     // Called when the WebCompositor did not handle the input event. If sendToWidget is true, the input event
     // should be forwarded to the WebWidget associated with this compositor for further processing.
     virtual void didNotHandleInputEvent(bool sendToWidget) = 0;
 
+    // Transfers an active wheel fling animation initiated by a previously handled input event out to the client.
+    // FIXME: Make pure virtual once implementation lands on Chromium side.
+    virtual void transferActiveWheelFlingAnimation(const WebActiveWheelFlingParameters&) { }
+
 protected:
     virtual ~WebCompositorInputHandlerClient() { }
 };
 
 } // namespace WebKit
 
 #endif