Merge "Back Arrow tweak slow swipe and fling animation" into udc-dev am: bd48c206

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22413388



Change-Id: Ib831a7b38fb3b185fde6c6f632f0a0c59766ea86
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>