Rename NotificationChannel#setBlockableSystem

Change the wifi source to call setBlockable (the renamed version), which
is in the module API surface.

Bug: 151311073
Test: atest NotificationChannelTest
Change-Id: I922fa1049a0d73dff752de5def21239cf69a442e
1 file changed
tree: 0ae4d9684e3f004b4f1e27702bcb4fd54d26b813
  1. apex/
  2. service/
  3. PREUPLOAD.cfg