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

content/browser/renderer_host/render_widget_host_view_aura.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include <set>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 1039 matching lines @@
       required_state = blink::WebTouchPoint::kStateUndefined;
       NOTREACHED();
       break;
   }
 
   // Only send acks for one changed touch point.
   bool sent_ack = false;
   for (size_t i = 0; i < touch.event.touches_length; ++i) {
     if (touch.event.touches[i].state == required_state) {
       DCHECK(!sent_ack);
-      host->dispatcher()->ProcessedTouchEvent(touch.event.unique_touch_event_id,
-                                              window_, result);
+      host->dispatcher()->ProcessedTouchEvent(
+          touch.event.unique_touch_event_id, window_, result,
+          InputEventAckStateIsSetNonBlocking(ack_result));
       sent_ack = true;
     }
   }
 }
 
 std::unique_ptr<SyntheticGestureTarget>
 RenderWidgetHostViewAura::CreateSyntheticGestureTarget() {
   return std::unique_ptr<SyntheticGestureTarget>(
       new SyntheticGestureTargetAura(host_));
 }
@@ skipping 1348 matching lines @@
       popup_child_host_view ? popup_child_host_view->event_handler() : nullptr);
 }
 
 void RenderWidgetHostViewAura::UpdateNeedsBeginFramesInternal() {
   if (!delegated_frame_host_)
     return;
   delegated_frame_host_->SetNeedsBeginFrames(needs_begin_frames_);
 }
 
 }  // namespace content