Merge "add uievent logs for nav buttons" into rvc-dev am: a15a870d am:...

Merge "add uievent logs for nav buttons" into rvc-dev am: a15a870d am: 02807bfa am: f1131e3f am: c607e4f3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11758280

Change-Id: I4a2b8e71fe6bba7b60cf7be2a28d6c989af27133