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

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

Change-Id: Ie08d2c9dbbb9945c802409dcea30b30f53f0f699