sky-scrollable should use a reasonable fling curve

sky/engine/core/events/PointerEvent.cpp

 // Copyright 2015 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 "sky/engine/config.h"
 #include "sky/engine/core/events/PointerEvent.h"
 
 namespace blink {
 
 static AtomicString stringForType(WebInputEvent::Type type)
@@ skipping 56 matching lines @@
     , m_distance(event.distance)
     , m_distanceMin(event.distanceMin)
     , m_distanceMax(event.distanceMax)
     , m_radiusMajor(event.radiusMajor)
     , m_radiusMinor(event.radiusMinor)
     , m_radiusMin(event.radiusMin)
     , m_radiusMax(event.radiusMax)
     , m_orientation(event.orientation)
     , m_tilt(event.tilt)
 {
+    m_timeStamp = event.timeStampMS;
 }
 
 PointerEvent::PointerEvent(const AtomicString& type, const PointerEventInit& initializer)
     : Event(type, initializer)
     , m_pointer(initializer.pointer)
     , m_kind(initializer.kind)
     , m_x(initializer.x)
     , m_y(initializer.y)
     , m_dx(initializer.dx)
     , m_dy(initializer.dy)
@@ skipping 10 matching lines @@
     , m_radiusMajor(initializer.radiusMajor)
     , m_radiusMinor(initializer.radiusMinor)
     , m_radiusMin(initializer.radiusMin)
     , m_radiusMax(initializer.radiusMax)
     , m_orientation(initializer.orientation)
     , m_tilt(initializer.tilt)
 {
 }
 
 } // namespace blink