Bundle DidOverscrollParams with the InputEventAck

content/browser/renderer_host/render_widget_host_view_base.h

Index: content/browser/renderer_host/render_widget_host_view_base.h
diff --git a/content/browser/renderer_host/render_widget_host_view_base.h b/content/browser/renderer_host/render_widget_host_view_base.h
index 73f3f17d61a92322238d665d979aed11789c96ce..ad85021c85a0d6c210f740879d34ce588b2ca95b 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.h
+++ b/content/browser/renderer_host/render_widget_host_view_base.h
@@ -53,8 +53,9 @@ class BrowserAccessibilityManager;
 class SyntheticGesture;
 class SyntheticGestureTarget;
 class WebCursor;
-struct WebPluginGeometry;
+struct DidOverscrollParams;
 struct NativeWebKeyboardEvent;
+struct WebPluginGeometry;
 
 // Basic implementation shared by concrete RenderWidgetHostView subclasses.
 class CONTENT_EXPORT RenderWidgetHostViewBase : public RenderWidgetHostView,
@@ -171,6 +172,8 @@ class CONTENT_EXPORT RenderWidgetHostViewBase : public RenderWidgetHostView,
   virtual void ProcessAckedTouchEvent(const TouchEventWithLatencyInfo& touch,
                                       InputEventAckState ack_result) {}
 
+  virtual void DidOverscroll(const DidOverscrollParams& params) {}
+
   virtual void DidStopFlinging() {}
 
   //----------------------------------------------------------------------------