Merge "Set-up transition-related leashes on start transaction" into tm-qpr-dev am: 0291c328

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17876768



Change-Id: I310ecf24b7407d413d72d8f7b19a446079a9d895
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>