Indicate whether a touch event will cause scrolling

content/browser/renderer_host/ui_events_helper.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 "content/browser/renderer_host/ui_events_helper.h"
 
 #include "content/browser/renderer_host/input/web_input_event_util.h"
 #include "content/common/input/web_touch_event_traits.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/events/event.h"
@@ skipping 286 matching lines @@
   for (unsigned i = 0; i < web_event->touchesLength; ++i) {
     blink::WebTouchPoint* iter = web_event->touches + i;
     if (iter != point)
       iter->state = blink::WebTouchPoint::StateStationary;
   }
 
   // Update the type of the touch event.
   WebTouchEventTraits::ResetType(TouchEventTypeFromEvent(event),
                                  event.time_stamp().InSecondsF(),
                                  web_event);
+  web_event->causesScrollingIfUncanceled = event.causes_scrolling();
   web_event->modifiers = EventFlagsToWebEventModifiers(event.flags());
 
   return point;
 }
 
 }  // namespace content