Merge "Add additional tracing for nav button backgrounds" into rvc-dev am: e184e6c819 am: 8c9db5dd54 am: b6abd7b862

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

Change-Id: I9cb009cbebe1365ce5591ab0826d0b53a5e0aaad