Redefined the bit WebTouchEvent.causesScrollingIfUncanceled.

content/browser/renderer_host/input/touch_event_queue.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/touch_event_queue.h"
 
 #include <utility>
 
 #include "base/auto_reset.h"
 #include "base/macros.h"
@@ skipping 292 matching lines @@
     if (event.type == WebInputEvent::TouchEnd ||
         event.type == WebInputEvent::TouchCancel)
       suppressing_touchmoves_ = false;
 
     if (event.type != WebInputEvent::TouchMove)
       return false;
 
     if (suppressing_touchmoves_) {
       if (event.touchesLength > 1) {
         suppressing_touchmoves_ = false;
-      } else if (event.causesScrollingIfUncanceled) {
+      } else if (event.movedBeyondSlopRegion) {
         suppressing_touchmoves_ = false;
       } else {
         // No sane slop region should be larger than 60 DIPs.
         DCHECK_LT((gfx::PointF(event.touches[0].position) -
                    touch_start_location_).LengthSquared(),
                   kMaxConceivablePlatformSlopRegionLengthDipsSquared);
       }
     }
 
     return suppressing_touchmoves_;
@@ skipping 554 matching lines @@
     if (ack_result == INPUT_EVENT_ACK_STATE_CONSUMED)
       send_touch_events_async_ = false;
     has_handler_for_current_sequence_ |=
         ack_result != INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS;
   } else if (WebTouchEventTraits::IsTouchSequenceEnd(event)) {
     has_handler_for_current_sequence_ = false;
   }
 }
 
 }  // namespace content