Update rich touch information to conform to standard

views/events/event.h

Index: views/events/event.h
diff --git a/views/events/event.h b/views/events/event.h
index 7f4b2e3f27f0f12560015f5fb9d225c662958d3c..9b1d33acb362ac29faaa5276992c3f06ba4c3957 100644
--- a/views/events/event.h
+++ b/views/events/event.h
@@ -261,9 +261,9 @@ class TouchEvent : public LocatedEvent {
              int y,
              int flags,
              int touch_id,
-             float radius,
-             float angle,
-             float ratio);
+             float radius_x,
+             float radius_y,
+             float angle);
 
   // Create a new TouchEvent which is identical to the provided model.
   // If source / target views are provided, the model location will be converted
@@ -272,9 +272,9 @@ class TouchEvent : public LocatedEvent {
 
   int identity() const { return touch_id_; }
 
-  float radius() const { return radius_; }
+  float radius_x() const { return radius_x_; }
+  float radius_y() const { return radius_y_; }
   float angle() const { return angle_; }
-  float ratio() const { return ratio_; }
 
  private:
   friend class internal::RootView;
@@ -285,16 +285,15 @@ class TouchEvent : public LocatedEvent {
   // for each separable additional touch that the hardware can detect.
   const int touch_id_;
 
-  // Half length of the major axis of the touch ellipse. Default 0.0.
-  const float radius_;
+  // Radius of the X (major) axis of the touch ellipse. 1.0 if unknown.
+  const float radius_x_;
+
+  // Radius of the Y (minor) axis of the touch ellipse. 1.0 if unknown.
+  const float radius_y_;
 
   // Angle of the major axis away from the X axis. Default 0.0.
   const float angle_;
 
-  // Length ratio between major axis and minor axis of the touch ellipse. 1.0
-  // if only the major axis is available, prentending the touch is a circle.
-  const float ratio_;
-
   DISALLOW_COPY_AND_ASSIGN(TouchEvent);
 };
 #endif