Pass MotionEvent tilt angles to Blink on Android.

ui/events/test/motion_event_test_utils.cc

Index: ui/events/test/motion_event_test_utils.cc
diff --git a/ui/events/test/motion_event_test_utils.cc b/ui/events/test/motion_event_test_utils.cc
index 0a3f80d26efbee7a552588367b416f4238a070e2..ec052913d1e26f60013330464186868e18415a4d 100644
--- a/ui/events/test/motion_event_test_utils.cc
+++ b/ui/events/test/motion_event_test_utils.cc
@@ -213,6 +213,7 @@ std::string ToString(const MotionEvent& event) {
          << event.GetTouchMinor(pi) << ")"
          << "\n  Orientation: " << event.GetOrientation(pi)
          << "\n  Pressure: " << event.GetPressure(pi)
+         << "\n  Tilt: " << event.GetTilt(pi)
          << "\n  Tool: " << event.GetToolType(pi);
       if (history_size) {
         ss << "\n  History: [";