Merge "Decrease Back Arrow committed animation duration" into udc-dev am: 7111e1f2 am: a124101b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22241020



Change-Id: I8b87d449ea99218658f7ff600d6942766c1a2c99
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>