exo: Replace pointer based stylus and replace with touch based stylus

ui/events/test/event_generator.cc

Index: ui/events/test/event_generator.cc
diff --git a/ui/events/test/event_generator.cc b/ui/events/test/event_generator.cc
index 297d8b0f1c99a7fa3f65916e7590d56378153c22..ee174c262194112f126fb36c6c597470ca2bd3f5 100644
--- a/ui/events/test/event_generator.cc
+++ b/ui/events/test/event_generator.cc
@@ -279,6 +279,11 @@ void EventGenerator::SetTouchRadius(float x, float y) {
   touch_pointer_details_.radius_y = y;
 }
 
+void EventGenerator::SetTouchTilt(float x, float y) {
+  touch_pointer_details_.tilt_x = x;
+  touch_pointer_details_.tilt_y = y;
+}
+
 void EventGenerator::PressTouch() {
   PressTouchId(0);
 }