Add scroll units in GestureEvents.

third_party/WebKit/Source/web/WebInputEventConversion.cpp

 /*
  * Copyright (C) 2009 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 186 matching lines @@
         break;
     case WebInputEvent::GestureScrollUpdate:
         m_type = PlatformEvent::GestureScrollUpdate;
         m_data.m_scroll.m_resendingPluginId = e.resendingPluginId;
         m_data.m_scroll.m_deltaX = scaleDeltaToWindow(widget, e.data.scrollUpdate.deltaX);
         m_data.m_scroll.m_deltaY = scaleDeltaToWindow(widget, e.data.scrollUpdate.deltaY);
         m_data.m_scroll.m_velocityX = e.data.scrollUpdate.velocityX;
         m_data.m_scroll.m_velocityY = e.data.scrollUpdate.velocityY;
         m_data.m_scroll.m_preventPropagation = e.data.scrollUpdate.preventPropagation;
         m_data.m_scroll.m_inertial = e.data.scrollUpdate.inertial;
+        switch (e.data.scrollUpdate.deltaUnits) {
+        case WebGestureEvent::ScrollUnits::PrecisePixels:
+            m_data.m_scroll.m_deltaUnits = ScrollGranularity::ScrollByPrecisePixel;
+            break;
+        case WebGestureEvent::ScrollUnits::Pixels:
+            m_data.m_scroll.m_deltaUnits = ScrollGranularity::ScrollByPixel;
+            break;
+        case WebGestureEvent::ScrollUnits::Page:
+            m_data.m_scroll.m_deltaUnits = ScrollGranularity::ScrollByPage;
+            break;
+        default:
+            ASSERT_NOT_REACHED();
+        }
         break;
     case WebInputEvent::GestureTap:
         m_type = PlatformEvent::GestureTap;
         m_area = expandedIntSize(scaleSizeToWindow(widget, FloatSize(e.data.tap.width, e.data.tap.height)));
         m_data.m_tap.m_tapCount = e.data.tap.tapCount;
         break;
     case WebInputEvent::GestureTapUnconfirmed:
         m_type = PlatformEvent::GestureTapUnconfirmed;
         m_area = expandedIntSize(scaleSizeToWindow(widget, FloatSize(e.data.tap.width, e.data.tap.height)));
         break;
@@ skipping 509 matching lines @@
         break;
     case GestureSourceTouchscreen:
         sourceDevice = WebGestureDeviceTouchscreen;
         break;
     case GestureSourceUninitialized:
         ASSERT_NOT_REACHED();
     }
 }
 
 } // namespace blink