Event smoothing in CrOS gesture recognizer.

ui/aura/gestures/gesture_point.h

Index: ui/aura/gestures/gesture_point.h
diff --git a/ui/aura/gestures/gesture_point.h b/ui/aura/gestures/gesture_point.h
index f39d252335b290511529a1271b96b23cc96206a5..3213a7fd19a890be229b39dc9c10373c4408f4c6 100644
--- a/ui/aura/gestures/gesture_point.h
+++ b/ui/aura/gestures/gesture_point.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "base/basictypes.h"
+#include "ui/aura/gestures/velocity_calculator.h"
 #include "ui/gfx/point.h"
 
 namespace aura {
@@ -62,8 +63,8 @@ class GesturePoint {
     return last_touch_position_.y() - first_touch_position_.y();
   }
 
-  float x_velocity() const { return x_velocity_; }
-  float y_velocity() const { return y_velocity_; }
+  float x_velocity() const { return velocity_calculator_.x_velocity(); }
+  float y_velocity() const { return velocity_calculator_.y_velocity(); }
 
  private:
   // Various statistical functions to manipulate gestures.
@@ -81,8 +82,7 @@ class GesturePoint {
   double last_tap_time_;
   gfx::Point last_tap_position_;
 
-  float x_velocity_;
-  float y_velocity_;
+  VelocityCalculator velocity_calculator_;
 
   DISALLOW_COPY_AND_ASSIGN(GesturePoint);
 };