Merge "DO NOT MERGE Let BackProgressAnimator could play cancel animation" into tm-qpr-dev am: 72426cc2eb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20876922

Change-Id: Idcab0bbe7f7d11862f2eceea97935065a9faf47c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>