Merge "Make Back arrow stroke appear earlier" into udc-dev am: b185da2a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23381398



Change-Id: I9b595f3225a609165018fdac82e57a96a7f1418c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>