Use FakeSettingsProvider callbacks to simplify CS tests.
Because FakeSettingsProvider and other test infrastructure did
not support settings observers, the tests called internal
ConnectivityService methods to cause the settings to be re-read.
Now that FakeSettingsProvider supports callbacks, use
ContentResolverWithFakeSettingsProvider in the CS tests and just
use the callbacks.
Bug: 397521796
Flag: TEST_ONLY
Test: test-only change
Change-Id: I26d8e98706fec99aa423721bf1474af2f9b60099
6 files changed