Filters out legacy unknown numbers.

- Adds "-1", "-2", "-3" as unknown number placeholders for legacy
  reasons.
- Disable calling feature for these numbers.
- Show caller info as "Unknown" for these numbers.

Bug: 10966248
Change-Id: Ibb7904685decbc602db33a56c7709279728e503d
2 files changed
tree: 4a0d9c9b7b45c33ba278081e16254dafd9c151bf
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml
  6. proguard.flags