Add scroll units in GestureEvents.

third_party/WebKit/Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1963 matching lines @@
         if (m_gestureAnimation->animate(lastFrameTimeMonotonic))
             scheduleAnimation();
         else {
             ASSERT(m_flingSourceDevice != WebGestureDeviceUninitialized);
             WebGestureDevice lastFlingSourceDevice = m_flingSourceDevice;
             endActiveFlingAnimation();
 
             PlatformGestureEvent endScrollEvent(PlatformEvent::GestureScrollEnd,
                 m_positionOnFlingStart, m_globalPositionOnFlingStart,
                 IntSize(), 0, PlatformEvent::NoModifiers, lastFlingSourceDevice == WebGestureDeviceTouchpad ? PlatformGestureSourceTouchpad : PlatformGestureSourceTouchscreen);
-            endScrollEvent.setScrollGestureData(0, 0, 0, 0, true, false, -1 /* null plugin id */);
+            endScrollEvent.setScrollGestureData(0, 0, ScrollByPrecisePixel, 0, 0, true, false, -1 /* null plugin id */);
 
             mainFrameImpl()->frame()->eventHandler().handleGestureScrollEnd(endScrollEvent);
         }
     }
 
     if (!m_page)
         return;
 
     PageWidgetDelegate::animate(*m_page, lastFrameTimeMonotonic);
 }
@@ skipping 2633 matching lines @@
 void WebViewImpl::detachPaintArtifactCompositor()
 {
     if (!m_layerTreeView)
         return;
 
     m_layerTreeView->setDeferCommits(true);
     m_layerTreeView->clearRootLayer();
 }
 
 } // namespace blink