Merge "Use async callback for unfold overlay synchronization" into tm-dev am: 39f02b6f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17540005



Change-Id: I036c0565ea9dc431a8d1133c0927b263ba78fb4d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>