Reland of [VSync Queue] Plug touch ack to gesture events and flush vsync queue if necessary

ui/aura/gestures/gesture_recognizer_unittest.cc

Index: ui/aura/gestures/gesture_recognizer_unittest.cc
diff --git a/ui/aura/gestures/gesture_recognizer_unittest.cc b/ui/aura/gestures/gesture_recognizer_unittest.cc
index 0aff210a0a7e3741f2e2f59d773dd42cf3c01109..8c6d262d98a29adb0cdf93df056a4df4451f3752 100644
--- a/ui/aura/gestures/gesture_recognizer_unittest.cc
+++ b/ui/aura/gestures/gesture_recognizer_unittest.cc
@@ -352,7 +352,7 @@
           synchronous_ack_for_next_event_ == AckState::CONSUMED
               ? ui::ER_CONSUMED
               : ui::ER_UNHANDLED,
-          window_);
+          false /* is_source_touch_event_set_non_blocking */, window_);
       synchronous_ack_for_next_event_ = AckState::PENDING;
     } else {
       sent_events_ids_.push_back(event->unique_event_id());
@@ -389,7 +389,8 @@
     sent_events_ids_.pop_front();
     dispatcher_->ProcessedTouchEvent(
         sent_event_id, window_,
-        prevent_defaulted ? ui::ER_HANDLED : ui::ER_UNHANDLED);
+        prevent_defaulted ? ui::ER_HANDLED : ui::ER_UNHANDLED,
+        false /* is_source_touch_event_set_non_blocking */);
   }
 
   Window* window_;