Merge "Sensitive Notification Reveal Animation Preparations" into tm-qpr-dev am: f382bb46

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21298419



Change-Id: Iaf774cf3407919bcaa9f737bec6d5a64cdb35a1d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>