Merge "Implement extra persistence layer for widget provider info" into tm-dev am: a710d8fe

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17355277



Change-Id: I7980b6b35f45a7ebc59172eaa375b25858b9454f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>