Keep track of coalesced events in main thread event queue

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 e379b7e4ff1c056451b15ca432463371809f6e59..aac43770f7cc3d9a2be9ca7756e714b7f8db3245 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -642,9 +642,11 @@ class CONTENT_EXPORT RenderViewImpl
   void UpdateWebViewWithDeviceScaleFactor();
 
   // Send the appropriate ack to be able discard this input event message.
-  void OnDiscardInputEvent(const blink::WebInputEvent* input_event,
-                           const ui::LatencyInfo& latency_info,
-                           InputEventDispatchType dispatch_type);
+  void OnDiscardInputEvent(
+      const blink::WebInputEvent* input_event,
+      const std::vector<const blink::WebInputEvent*>& coalesced_events,
+      const ui::LatencyInfo& latency_info,
+      InputEventDispatchType dispatch_type);
 
   // ---------------------------------------------------------------------------
   // ADDING NEW FUNCTIONS? Please keep private functions alphabetized and put