Separate motion event touch geometry orientation from stylus orientation.

ui/events/gesture_detection/motion_event_generic.cc

Index: ui/events/gesture_detection/motion_event_generic.cc
diff --git a/ui/events/gesture_detection/motion_event_generic.cc b/ui/events/gesture_detection/motion_event_generic.cc
index 19262aa6e95dcc411beab127d95fd1d069bbd84a..f99e306738ce6dedb0cbcce417fc2d30ed1cd737 100644
--- a/ui/events/gesture_detection/motion_event_generic.cc
+++ b/ui/events/gesture_detection/motion_event_generic.cc
@@ -23,7 +23,7 @@ PointerProperties::PointerProperties(float x, float y, float touch_major)
       pressure(0),
       touch_major(touch_major),
       touch_minor(0),
-      orientation(0),
+      touch_orientation(0),
       source_device_id(0) {
 }
 
@@ -38,7 +38,7 @@ PointerProperties::PointerProperties(const MotionEvent& event,
       pressure(event.GetPressure(pointer_index)),
       touch_major(event.GetTouchMajor(pointer_index)),
       touch_minor(event.GetTouchMinor(pointer_index)),
-      orientation(event.GetOrientation(pointer_index)),
+      touch_orientation(event.GetTouchOrientation(pointer_index)),
       source_device_id(0) {
 }
 
@@ -124,9 +124,9 @@ float MotionEventGeneric::GetTouchMinor(size_t pointer_index) const {
   return pointers_[pointer_index].touch_minor;
 }
 
-float MotionEventGeneric::GetOrientation(size_t pointer_index) const {
+float MotionEventGeneric::GetTouchOrientation(size_t pointer_index) const {
   DCHECK_LT(pointer_index, pointers_->size());
-  return pointers_[pointer_index].orientation;
+  return pointers_[pointer_index].touch_orientation;
 }
 
 float MotionEventGeneric::GetPressure(size_t pointer_index) const {