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

ui/events/gestures/gesture_recognizer_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
 #define UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 54 matching lines @@
 
   void DispatchGestureEvent(GestureConsumer* raw_input_consumer,
                             GestureEvent* event);
 
   // Overridden from GestureRecognizer
   bool ProcessTouchEventPreDispatch(TouchEvent* event,
                                     GestureConsumer* consumer) override;
 
   Gestures AckTouchEvent(uint32_t unique_event_id,
                          ui::EventResult result,
+                         bool is_source_touch_event_set_non_blocking,
                          GestureConsumer* consumer) override;
 
   bool CleanupStateForConsumer(GestureConsumer* consumer) override;
   void AddGestureEventHelper(GestureEventHelper* helper) override;
   void RemoveGestureEventHelper(GestureEventHelper* helper) override;
 
   // Overridden from GestureProviderAuraClient
   void OnGestureEvent(GestureConsumer* raw_input_consumer,
                       GestureEvent* event) override;
 
@@ skipping 19 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(GestureRecognizerImpl);
 };
 
 // Provided only for testing:
 EVENTS_EXPORT void SetGestureRecognizerForTesting(
     GestureRecognizer* gesture_recognizer);
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_