Merge "Let default transition handler animate customized animation" into...

Merge "Let default transition handler animate customized animation" into udc-dev am: bfd84899 am: eee875a9 am: eb83bfb5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23563396



Change-Id: Ibb2a6be8b2b9f11820c66750666afeb45ecce54d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>