Merge "Fix flicker on first fold after launcher process started" into udc-dev...

Merge "Fix flicker on first fold after launcher process started" into udc-dev am: fa17fd57 am: 47ec949c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22574850



Change-Id: I8b32ad09d951f1a7091c8c6a361a6ef5a2ebfb0c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>