Merge 112364 - [chromium] Transfer wheel fling via WebCompositorInputHandlerClient

Source/WebKit/chromium/public/WebCompositorInputHandlerClient.h

Index: Source/WebKit/chromium/public/WebCompositorInputHandlerClient.h
===================================================================
--- Source/WebKit/chromium/public/WebCompositorInputHandlerClient.h	(revision 112613)
+++ Source/WebKit/chromium/public/WebCompositorInputHandlerClient.h	(working copy)
@@ -28,6 +28,8 @@
 
 namespace WebKit {
 
+struct WebActiveWheelFlingParameters;
+
 class WebCompositorInputHandlerClient {
 public:
     // Callbacks invoked from the compositor thread.
@@ -42,6 +44,10 @@
     // 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() { }
 };