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ui/base/gestures/gesture_sequence.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 "ui/base/gestures/gesture_sequence.h"
 
 #include <cmath>
 #include <stdlib.h>
 
 #include "base/logging.h"
@@ skipping 702 matching lines @@
   else if (scroll_type_ == ST_VERTICAL)
     railed_x_velocity = 0;
 
   if (railed_x_velocity != 0 || railed_y_velocity != 0) {
 
     gestures->push_back(CreateGestureEvent(
         GestureEventDetails(ui::ET_SCROLL_FLING_START,
             CalibrateFlingVelocity(railed_x_velocity),
             CalibrateFlingVelocity(railed_y_velocity)),
         location,
-        flags_,
+        flags_ | EF_FROM_TOUCH,

[sky, 2013/01/22 18:05:01]

Why would we only set EF_FROM_TOUCH for fling starts? If we're going to start
setting EF_FROM_TOUCH, shouldn't it be set every where?

[sadrul, 2013/01/22 20:07:24]

I agree. The best place would be to set the flag in the GestureEvent constructor

[DaveMoore, 2013/01/27 21:21:54]

Done.

[DaveMoore, 2013/01/27 21:21:54]

Done.

         base::Time::FromDoubleT(point.last_touch_time()),
         1 << point.touch_id()));
   } else {
     gestures->push_back(CreateGestureEvent(
         GestureEventDetails(ui::ET_GESTURE_SCROLL_END, 0, 0),
         location,
         flags_,
         base::Time::FromDoubleT(point.last_touch_time()),
         1 << point.touch_id()));
   }
@@ skipping 390 matching lines @@
     return;
 
   // Since long press timer has been started, there should be a non-NULL point.
   const GesturePoint* point = GetPointByPointId(0);
   if (!ui::gestures::IsInsideManhattanSquare(point->first_touch_position(),
       event.location()))
     GetLongPressTimer()->Stop();
 }
 
 }  // namespace ui