Make CALLBACK_PRECHECK actually work.

Currently, CALLBACK_PRECHECK is never fired, because we attempt
to send it just after a network has connected, before matching
requests to that network. So notifyNetworkCallbacks scans the
list of requests for the network, finds none, and does nothing.

Bug: 20038463
Change-Id: Ib0c6377c45990e358f926217d7c7defa74c1d59b
1 file changed
tree: 644971cdd8aa7fe05be60b2b2e4d83cc23b9d9be
  1. core/
  2. services/
  3. tests/