Changes to BlockedNumberProvider:

1. Remove STRIPPED_PHONE_NUMBER column.
2. Temporarily permit system apps to access provider.
3. Notify changes to content so that ListViews work well with the provider.
4. Use DE storage.

BUG: 26232372
Change-Id: Ib7fad2c3971a7b7b74c86c46fe3514330c22334c
5 files changed