Revert "ConnectivityManager: no double NetworkCallback registration" because oit caused regressions http://b/35955593, http://b/35921499.

This reverts commit e2b14dc251c26365270dc053747fb6bd45a319e5.

Change-Id: I86c07c113f24753be7c977e6d7f570b99391e1b5
2 files changed
tree: 459e56bbb51c4e764078408b9596f942e9afec77
  1. core/
  2. services/
  3. tests/