Write UiEvent log metrics to One-Handed.

To log One-Handed mode events via UiEventLogger.

Bug: 149366439

Test: manual
Test: Test-drive by command: adb shell cmd stats print-logs
      && adb logcat -s statsd:I | grep ' (90)'
Change-Id: I863e9ec83f8a4b4fde6e73cd0fed1e2b226da4cd