Update mobile data preference getter/setter

To satisfy OEM's requests, setting mobile data preference
should be by uid. Thus, update the getter/setter to
return/accept set of uids that need to apply mobile data
preference.

Bug: 171872461
Test: atest FrameworksNetTests
Change-Id: Id44efd2a6d820867f4405426c91e65b9ef155898
2 files changed
tree: 1d04fce3a16225040d071a5b790519d83a475da8
  1. framework/
  2. service/
  3. OWNERS
  4. TEST_MAPPING