Merge "Don't change bucketing reason if app is already in better bucket." into...

Merge "Don't change bucketing reason if app is already in better bucket." into tm-dev am: 7950f77e am: a4225a22

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18496890



Change-Id: Ic7e33e1428de8e5c883c51fe60d7df2a3919f682
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>