[automerger skipped] Merge "Add API to allow SysUI/launcher to customize...

[automerger skipped] Merge "Add API to allow SysUI/launcher to customize legacy task transition animations" into sc-v2-dev am: 398ef465 am: 393b4fde -s ours

am skip reason: Merged-In Ifb7f89e7fde47155eb987161fbbe30e7144103ab with SHA-1 d95860a7 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15959184

Change-Id: Id784ecc7313dbd5f9e60332c84d5728a5756245d