Merge "Add additional tracing for nav button backgrounds" into rvc-dev am: e184e6c819 am: 8c9db5dd54

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

Change-Id: Ia88d35f99b64a3f7de0565a04cb4ac851ad52c6a