Merge "Cache Blockable state of Notif. Entry" into tm-qpr-dev am: 9c8a2793 am: c3acd4a2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19049813



Change-Id: I7edac94e8be447e6041db106d4f5112d1da05293
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>