Add support for maintaining ordinal values through GestureRecognizer

ui/base/gestures/gesture_sequence.cc

Index: ui/base/gestures/gesture_sequence.cc
diff --git a/ui/base/gestures/gesture_sequence.cc b/ui/base/gestures/gesture_sequence.cc
index 1c674087a6a3df307df8cb9dadf0b69ae67223bc..b4f32e4b50daac1538945c50e4233719b413e542 100644
--- a/ui/base/gestures/gesture_sequence.cc
+++ b/ui/base/gestures/gesture_sequence.cc
@@ -746,7 +746,9 @@ void GestureSequence::AppendScrollGestureEnd(const GesturePoint& point,
     gestures->push_back(CreateGestureEvent(
         GestureEventDetails(ui::ET_SCROLL_FLING_START,
             CalibrateFlingVelocity(railed_x_velocity),
-            CalibrateFlingVelocity(railed_y_velocity)),
+            CalibrateFlingVelocity(railed_y_velocity),
+            CalibrateFlingVelocity(x_velocity),
+            CalibrateFlingVelocity(y_velocity)),
         location,
         flags_,
         base::Time::FromDoubleT(point.last_touch_time()),
@@ -789,6 +791,8 @@ void GestureSequence::AppendScrollGestureUpdate(GesturePoint& point,
                               last_scroll_prediction_offset_.y());
   }
 
+  gfx::Vector2dF o = d;
+
   if (scroll_type_ == ST_HORIZONTAL)
     d.set_y(0);
   else if (scroll_type_ == ST_VERTICAL)
@@ -796,10 +800,13 @@ void GestureSequence::AppendScrollGestureUpdate(GesturePoint& point,
   if (d.IsZero())
     return;
 
-  GestureEventDetails details(ui::ET_GESTURE_SCROLL_UPDATE, d.x(), d.y());
+  GestureEventDetails details(ui::ET_GESTURE_SCROLL_UPDATE,
+                              d.x(), d.y(), o.x(), o.y());
   details.SetScrollVelocity(
       scroll_type_ == ST_VERTICAL ? 0 : point.XVelocity(),
-      scroll_type_ == ST_HORIZONTAL ? 0 : point.YVelocity());
+      scroll_type_ == ST_HORIZONTAL ? 0 : point.YVelocity(),
+      point.XVelocity(),
+      point.YVelocity());
   gestures->push_back(CreateGestureEvent(
       details,
       location,