Merge "Add importance ring animation on convo priority change" into rvc-dev...

Merge "Add importance ring animation on convo priority change" into rvc-dev am: 80d5c61d am: 8cb827b0 am: e4db7419 am: fee44b0b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11739864

Change-Id: Iff81d33fe0ff72ed0102475ebbb7e1bbb32f78a8