Completed webkit radiusX, radiusY and rotationAngle handling.

ui/events/gesture_detection/motion_event.h

Index: ui/events/gesture_detection/motion_event.h
diff --git a/ui/events/gesture_detection/motion_event.h b/ui/events/gesture_detection/motion_event.h
index c2e0562a591af58f8832b5210f0171b9b3f16dbf..487429ba64f42466e94047d6e2e0187445d36193 100644
--- a/ui/events/gesture_detection/motion_event.h
+++ b/ui/events/gesture_detection/motion_event.h
@@ -58,6 +58,8 @@ class GESTURE_DETECTION_EXPORT MotionEvent {
   virtual float GetRawX(size_t pointer_index) const = 0;
   virtual float GetRawY(size_t pointer_index) const = 0;
   virtual float GetTouchMajor(size_t pointer_index) const = 0;
+  virtual float GetTouchMinor(size_t pointer_index) const = 0;
+  virtual float GetOrientation(size_t pointer_index) const = 0;
   virtual float GetPressure(size_t pointer_index) const = 0;
   virtual ToolType GetToolType(size_t pointer_index) const = 0;
   virtual int GetButtonState() const = 0;
@@ -68,6 +70,10 @@ class GESTURE_DETECTION_EXPORT MotionEvent {
   virtual base::TimeTicks GetHistoricalEventTime(size_t historical_index) const;
   virtual float GetHistoricalTouchMajor(size_t pointer_index,
                                         size_t historical_index) const;
+  virtual float GetHistoricalTouchMinor(size_t pointer_index,
+                                        size_t historical_index) const;

[jdduke (slow), 2014/08/27 18:10:40]

Where are these historical values used? I'd prefer we not expose them (anywhere)
unless absolutely necessary.

[mustaq, 2014/08/27 20:51:08]

We have one "real" reference to GetHistoricalTouchMajor:
https://code.google.com/p/chromium/codesearch#chromium/src/ui/events/gesture_...
I think a GetHistoricalTouchMajor w/o a GetHistoricalTouch{Minor,Orientation}
makes the interface a bit too odd.

[jdduke (slow), 2014/08/27 20:53:54]

We can add to the interface if/when we need it, let's remove it for now.

[mustaq, 2014/08/28 14:08:37]

Makes sense since we are planning to nuke GetHistoricalTouchMajor. Done.

+  virtual float GetHistoricalOrientation(size_t pointer_index,
+                                        size_t historical_index) const;
   virtual float GetHistoricalX(size_t pointer_index,
                                size_t historical_index) const;
   virtual float GetHistoricalY(size_t pointer_index,
@@ -84,6 +90,8 @@ class GESTURE_DETECTION_EXPORT MotionEvent {
   float GetRawOffsetX() const { return GetRawX() - GetX(); }
   float GetRawOffsetY() const { return GetRawY() - GetY(); }
   float GetTouchMajor() const { return GetTouchMajor(0); }
+  float GetTouchMinor() const { return GetTouchMinor(0); }
+  float GetOrientation() const { return GetOrientation(0); }
   float GetPressure() const { return GetPressure(0); }
   ToolType GetToolType() const { return GetToolType(0); }