Merge "Use top activity for fixed rotation from snapshot starting window" into...

Merge "Use top activity for fixed rotation from snapshot starting window" into tm-dev am: d6ad543b am: 2ce5ae58 am: d2097947 am: 4b7bc40c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18924772



Change-Id: I586490e891f8a8e83fb02e1f82539f0447a74a6c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>