Ignore TouchCancel ack dispositions

content/browser/renderer_host/input/synthetic_web_input_event_builders.cc

 // Copyright 2013 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/input/synthetic_web_input_event_builders.h"
 
 #include "base/logging.h"
 #include "content/browser/renderer_host/input/web_input_event_util.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 
@@ skipping 150 matching lines @@
   touches[index].state = WebTouchPoint::StateMoved;
   type = WebInputEvent::TouchMove;
 }
 
 void SyntheticWebTouchEvent::ReleasePoint(int index) {
   CHECK(index >= 0 && index < touchesLengthCap);
   touches[index].state = WebTouchPoint::StateReleased;
   type = WebInputEvent::TouchEnd;
 }
 
+void SyntheticWebTouchEvent::CancelPoint(int index) {
+  CHECK(index >= 0 && index < touchesLengthCap);
+  touches[index].state = WebTouchPoint::StateCancelled;
+  type = WebInputEvent::TouchCancel;
+}
+
 void SyntheticWebTouchEvent::SetTimestamp(base::TimeDelta timestamp) {
   timeStampSeconds = timestamp.InSecondsF();
 }
 
 SyntheticWebTouchEvent SyntheticWebTouchEventBuilder::Build(
     WebInputEvent::Type type) {
   DCHECK(WebInputEvent::isTouchEventType(type));
   SyntheticWebTouchEvent result;
   result.type = type;
   return result;
 };
 
 }  // namespace content