Merge "Add additional tracing for nav button backgrounds" into rvc-dev am:...

Merge "Add additional tracing for nav button backgrounds" into rvc-dev am: e184e6c8 am: 8c9db5dd am: b6abd7b8 am: 38adc4c5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11869885

Change-Id: I53de13b0cc182775c1d6b8b7b427a02ce23c016d