Merge "Add new callback for when activity rotates" into rvc-dev am: 38dbc979...

Merge "Add new callback for when activity rotates" into rvc-dev am: 38dbc979 am: b0d73832 am: 8e8e0347 am: 6ac75ea8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11396809

Change-Id: Ie1e341220ed6c0a1a9e37c4e41fa4c64b2efeb2b