Merge "Revert "Synchronize cache-is-ready boolean with cache readiness."" into...

Merge "Revert "Synchronize cache-is-ready boolean with cache readiness."" into tm-dev am: 2dabd120

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18384536



Change-Id: I0fad10146b69dc53bd43234e213d74fde89e03f8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>