Implement active wheel fling transfer via WebCompositorInputHandlerClient

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index 9f097ed73ac7f746a130b397c7a23dd1344b8a6f..175684ba241ef110a98a45c73955049d651427b4 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -134,6 +134,7 @@ class WebTouchEvent;
 class WebURLLoader;
 class WebURLRequest;
 class WebUserMediaClient;
+struct WebActiveWheelFlingParameters;
 struct WebFileChooserParams;
 struct WebFindOptions;
 struct WebMediaPlayerAction;
@@ -323,6 +324,9 @@ class RenderViewImpl : public RenderWidget,
                                     webkit::WebPluginInfo* plugin_info,
                                     std::string* actual_mime_type);
 
+  void TransferActiveWheelFlingAnimation(
+      const WebKit::WebActiveWheelFlingParameters& params);
+
   // IPC::Channel::Listener implementation -------------------------------------
 
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
@@ -339,6 +343,7 @@ class RenderViewImpl : public RenderWidget,
   virtual bool requestPointerLock();
   virtual void requestPointerUnlock();
   virtual bool isPointerLocked();
+  virtual void didActivateCompositor(int input_handler_identifier);
 
   // WebKit::WebViewClient implementation --------------------------------------