Merge "Add network disconnected callback" am: 6d1437a596

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1652259

Change-Id: I75bd112821c42c16d7ed91ecbb4f21104c95204b
tree: 8d36e2d4431d8e9ee5f357815c95d8839286acb7
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS
  7. TEST_MAPPING