Bundle DidOverscrollParams with the InputEventAck

content/browser/renderer_host/input/input_router_client.h

Index: content/browser/renderer_host/input/input_router_client.h
diff --git a/content/browser/renderer_host/input/input_router_client.h b/content/browser/renderer_host/input/input_router_client.h
index 647c081e3b945aa78c927498b510454a0f1f606b..89efb37915a76b5dcf29d322387a2ad085b366ee 100644
--- a/content/browser/renderer_host/input/input_router_client.h
+++ b/content/browser/renderer_host/input/input_router_client.h
@@ -18,6 +18,7 @@ struct LatencyInfo;
 namespace content {
 
 class OverscrollController;
+struct DidOverscrollParams;
 
 class CONTENT_EXPORT InputRouterClient {
  public:
@@ -56,6 +57,8 @@ class CONTENT_EXPORT InputRouterClient {
   // of the call to Flush.  The call will typically be asynchronous with
   // respect to the call to |Flush| on the InputRouter.
   virtual void DidFlush() = 0;
+
+  virtual void DidOverscroll(const DidOverscrollParams& params) = 0;
 };
 
 } // namespace content