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: I6742a526d6f6600df4a7368a4f5de05e5c94807f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>