Fix movementX/Y attributes for touch pointer events

content/browser/renderer_host/render_widget_host_view_event_handler.cc

 // Copyright 2016 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/render_widget_host_view_event_handler.h"
 
 #include "base/metrics/user_metrics_action.h"
 #include "content/browser/renderer_host/input/touch_selection_controller_client_aura.h"
 #include "content/browser/renderer_host/overscroll_controller.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
@@ skipping 452 matching lines @@
 
   // It is important to always mark events as being handled asynchronously when
   // they are forwarded. This ensures that the current event does not get
   // processed by the gesture recognizer before events currently awaiting
   // dispatch in the touch queue.
   event->DisableSynchronousHandling();
 
   // Set unchanged touch point to StateStationary for touchmove and
   // touchcancel to make sure only send one ack per WebTouchEvent.
   MarkUnchangedTouchPointsAsStationary(&touch_event, event->touch_id());
+  // Set the last position of each touch point and calculate the movement delta
+  // and set it in each touch point.
+  host_view_->SetMovementXYForTouchPoints(&touch_event);
+
   if (ShouldRouteEvent(event)) {
     host_->delegate()->GetInputEventRouter()->RouteTouchEvent(
         host_view_, &touch_event, *event->latency());
   } else {
     ProcessTouchEvent(touch_event, *event->latency());
   }
 }
 
 void RenderWidgetHostViewEventHandler::OnGestureEvent(ui::GestureEvent* event) {
   TRACE_EVENT0("input", "RenderWidgetHostViewBase::OnGestureEvent");
@@ skipping 374 matching lines @@
   host_->ForwardWheelEventWithLatencyInfo(event, latency);
 }
 
 void RenderWidgetHostViewEventHandler::ProcessTouchEvent(
     const blink::WebTouchEvent& event,
     const ui::LatencyInfo& latency) {
   host_->ForwardTouchEventWithLatencyInfo(event, latency);
 }
 
 }  // namespace content