Merge "Allow custom animations to run on ActivityEmbeddings and propagate...

Merge "Allow custom animations to run on ActivityEmbeddings and propagate custom backdrop color." into tm-qpr-dev am: 9c50f7af

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18705127



Change-Id: I18298241523f286dea3c3353ead353e24fe96744
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>