Signal input flush when all flings have terminated

content/browser/renderer_host/input/mock_input_router_client.h

Index: content/browser/renderer_host/input/mock_input_router_client.h
diff --git a/content/browser/renderer_host/input/mock_input_router_client.h b/content/browser/renderer_host/input/mock_input_router_client.h
index dd0ef9d0747563094fff54bd2a2e32a00148e7e7..c4938a4a4e2e3bcef909c1463de2abec1f47994b 100644
--- a/content/browser/renderer_host/input/mock_input_router_client.h
+++ b/content/browser/renderer_host/input/mock_input_router_client.h
@@ -26,9 +26,9 @@ class MockInputRouterClient : public InputRouterClient {
   void IncrementInFlightEventCount() override;
   void DecrementInFlightEventCount() override;
   void OnHasTouchEventHandlers(bool has_handlers) override;
-  void SetNeedsFlush() override;
   void DidFlush() override;
   void DidOverscroll(const DidOverscrollParams& params) override;
+  void DidStopFlinging() override;
 
   bool GetAndResetFilterEventCalled();
   size_t GetAndResetDidFlushCount();
@@ -60,7 +60,6 @@ class MockInputRouterClient : public InputRouterClient {
   scoped_ptr<InputEvent> last_filter_event_;
 
   size_t did_flush_called_count_;
-  bool set_needs_flush_called_;
 
   DidOverscrollParams overscroll_;
 };