Redefined the bit WebTouchEvent.causesScrollingIfUncanceled.

ui/events/blink/blink_event_util.h

 // Copyright 2015 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_BLINK_BLINK_EVENT_UTIL_H_
 #define UI_EVENTS_BLINK_BLINK_EVENT_UTIL_H_
 
 #include "base/memory/scoped_ptr.h"
 
 namespace base {
@@ skipping 12 matching lines @@
 
 namespace ui {
 struct GestureEventData;
 struct GestureEventDetails;
 class MotionEvent;
 
 blink::WebTouchEvent CreateWebTouchEventFromMotionEvent(
     const MotionEvent& event,
     bool may_cause_scrolling);
 
+bool IsTouchSequenceStart(const MotionEvent& event);
+
 blink::WebGestureEvent CreateWebGestureEvent(const GestureEventDetails& details,
                                              base::TimeDelta timestamp,
                                              const gfx::PointF& location,
                                              const gfx::PointF& raw_location,
                                              int flags);
 
 // Convenience wrapper for |CreateWebGestureEvent| using the supplied |data|.
 blink::WebGestureEvent CreateWebGestureEventFromGestureEventData(
     const GestureEventData& data);
 
 int EventFlagsToWebEventModifiers(int flags);
 
 scoped_ptr<blink::WebInputEvent> ScaleWebInputEvent(
     const blink::WebInputEvent& event,
     float scale);
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_BLINK_BLINK_EVENT_UTIL_H_