Suppress sending mousedown / mouseup when in fling

content/browser/renderer_host/gesture_event_filter.cc

Index: content/browser/renderer_host/gesture_event_filter.cc
diff --git a/content/browser/renderer_host/gesture_event_filter.cc b/content/browser/renderer_host/gesture_event_filter.cc
index 7b06e811dc9d492d1c4a52575353a69be2e6257d..c924553f50fe4daeea3f97ed1bdca26254b86124 100644
--- a/content/browser/renderer_host/gesture_event_filter.cc
+++ b/content/browser/renderer_host/gesture_event_filter.cc
@@ -128,6 +128,8 @@ bool GestureEventFilter::ShouldForwardForTapDeferral(
       if (!ShouldDiscardFlingCancelEvent(gesture_event)) {
         coalesced_gesture_events_.push_back(gesture_event);
         fling_in_progress_ = false;
+        tap_suppression_controller_->GestureFlingCancel(
+            gesture_event.timeStampSeconds);
         return ShouldHandleEventNow();
       }
       return false;
@@ -204,6 +206,8 @@ void GestureEventFilter::Reset() {
 void GestureEventFilter::ProcessGestureAck(bool processed, int type) {
   DCHECK_EQ(coalesced_gesture_events_.front().type, type);
   coalesced_gesture_events_.pop_front();
+  if (type == WebInputEvent::GestureFlingCancel)
+    tap_suppression_controller_->GestureFlingCancelAck(processed);
   if (!coalesced_gesture_events_.empty()) {
     WebGestureEvent next_gesture_event = coalesced_gesture_events_.front();
     render_widget_host_->ForwardGestureEventImmediately(next_gesture_event);