Track whether a scroll sequence has been partially prevented

ui/events/gesture_detection/gesture_event_data.cc

 // Copyright 2014 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 "ui/events/gesture_detection/gesture_event_data.h"
 
 #include "base/logging.h"
 
 namespace ui {
 
@@ skipping 18 matching lines @@
       raw_y(raw_y),
       flags(flags) {
   DCHECK_GE(motion_event_id, 0);
   DCHECK_NE(0U, touch_point_count);
   this->details.set_touch_points(static_cast<int>(touch_point_count));
   this->details.set_bounding_box(bounding_box);
 }
 
 GestureEventData::GestureEventData(EventType type,
                                    const GestureEventData& other)
-    : details(type),
+    : details(type, other.details),
       motion_event_id(other.motion_event_id),
       primary_tool_type(other.primary_tool_type),
       time(other.time),
       x(other.x),
       y(other.y),
       raw_x(other.raw_x),
       raw_y(other.raw_y),
       flags(other.flags) {
   details.set_touch_points(other.details.touch_points());
   details.set_bounding_box(other.details.bounding_box_f());
 }
 
 GestureEventData::GestureEventData()
     : motion_event_id(0),
       primary_tool_type(MotionEvent::TOOL_TYPE_UNKNOWN),
       x(0),
       y(0),
       raw_x(0),
       raw_y(0),
       flags(EF_NONE) {
 }
 
 }  //  namespace ui