Merge "Synchronize cache-is-ready boolean with cache readiness." into tm-dev am: c3c32652

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18284940



Change-Id: I4ac0e59eefdd9a084640d20a836b305587e97e9d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>