Merge "Fix race condition in QSTileHost" into tm-dev am: f349915128

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19416449

Change-Id: Id2a049068b83417e6b0d295dda083d7ddb5a9c56
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>