Merge "Add SystemMessages protos to Connectivity" am: cf638d345b

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1626204

Change-Id: I8648b09a97485dcecac2e5075d605e79a730ec3f
tree: d2c1c8cc9dd050ca0606dc980bf6cb36d626a039
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS