Merge "Change Size Compat mode resizability heuristic to look at top activity"...

Merge "Change Size Compat mode resizability heuristic to look at top activity" into tm-qpr-dev am: b5bf8a73 am: 35db892e am: b68e21e9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21609714



Change-Id: I0932d7b27f8f7d3505c843cdfdcea60192382214
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>