Defer scroll status determination until scrolling has occurred

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 6d3cdcfc77b6025fbee617afc03821c5b1e9f0df..6644306b4e0087ff96e31883ec499fd9fc161788 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -1079,13 +1079,9 @@ void RenderWidget::OnHandleInputEvent(const blink::WebInputEvent* input_event,
     }
   }
 
-  // Unconsumed touchmove acks should never be throttled as they're required to
-  // dispatch compositor-handled scroll gestures.
   bool event_type_can_be_rate_limited =
       input_event->type == WebInputEvent::MouseMove ||
-      input_event->type == WebInputEvent::MouseWheel ||
-      (input_event->type == WebInputEvent::TouchMove &&
-       ack_result == INPUT_EVENT_ACK_STATE_CONSUMED);
+      input_event->type == WebInputEvent::MouseWheel;
 
   bool frame_pending = compositor_ && compositor_->BeginMainFrameRequested();