Merge "Update mobile data preference getter/setter" am: a035d3a77c am: a7d1ee6f5e am: b6527ca6aa

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1702486

Change-Id: Ib55aaba8c8afc8a3152d83932bf345277bda35f9
tree: 1491dd7a0e4366ac02b83efb6b15c940d5a0be5b
  1. framework/
  2. service/
  3. test/
  4. tests/
  5. OWNERS
  6. TEST_MAPPING