Add tangentialPressure and twist properties to PointerEvent on Windows

ui/events/event.h

Index: ui/events/event.h
diff --git a/ui/events/event.h b/ui/events/event.h
index 20e02626b872b087633488bf4e2e0d8c17e35cd5..f9ecf99f56869425e8d7435b745f8b1398b36f48 100644
--- a/ui/events/event.h
+++ b/ui/events/event.h
@@ -437,6 +437,8 @@ struct EVENTS_EXPORT PointerDetails {
            (force == other.force ||
             (std::isnan(force) && std::isnan(other.force))) &&
            tilt_x == other.tilt_x && tilt_y == other.tilt_y &&
+           tangentialPressure == other.tangentialPressure &&
+           twist == other.twist &&
            offset == other.offset;
   }
 
@@ -459,6 +461,16 @@ struct EVENTS_EXPORT PointerDetails {
   float tilt_x = 0.0;
   float tilt_y = 0.0;
 
+  // The normalized tangential pressure (or barrel pressure), typically set by
+  // an additional control of the stylus, which has a range of [-1,1], where 0
+  // is the neutral position of the control. Always 0 if the device does not
+  // support it.
+  float tangentialPressure = 0.0;
+
+  // The clockwise rotation of a pen stylus around its own major axis, in
+  // degrees in the range [0,359]. Always 0 if the device does not support it.
+  int twist = 0;
+
   // Only used by mouse wheel events. The amount to scroll. This is in multiples
   // of kWheelDelta.
   // Note: offset_.x() > 0/offset_.y() > 0 means scroll left/up.