Add MOBILE_DATA_PREFERRED_APPS setting am: 521169738c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1654015

Change-Id: I4d5c5cfaa2a35a6919517c6e5737fffdd0f217f3
tree: 119b1389fddfc8baff5a88677c671dcc2bc7b9cc
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS
  7. TEST_MAPPING