[automerger skipped] Merge "DO NOT MERGE Let BackProgressAnimator could play cancel animation" into tm-qpr-dev am: 72426cc2eb am: 532e02d286 -s ours

am skip reason: subject contains skip directive

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

Change-Id: I42ce50239c11b4e48613cfc026b7d162c50c482f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>