Added experimental Touch.tilt, Touch.tiltDirection support for Android

ui/events/x/events_x.cc

Index: ui/events/x/events_x.cc
diff --git a/ui/events/x/events_x.cc b/ui/events/x/events_x.cc
index 6678f01dac7983e7a637ae2c6a339409afb16081..835b9a4b7e8d390f7e95b07b68e4cfd95bb0c679 100644
--- a/ui/events/x/events_x.cc
+++ b/ui/events/x/events_x.cc
@@ -798,6 +798,16 @@ float GetTouchAngle(const base::NativeEvent& native_event) {
       ui::DeviceDataManagerX11::DT_TOUCH_ORIENTATION, 0.0) / 2.0;
 }
 
+float GetTouchTilt(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0.0f;
+}
+
+float GetTouchTiltDirection(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0.0f;
+}
+
 float GetTouchForce(const base::NativeEvent& native_event) {
   double force = 0.0;
   force = GetTouchParamFromXEvent(native_event,