Create new isNetworkSupported API

Useful for checking if on a wifi-only device.
Similar to asking for NetworkInfo for a network type and checking for
null, though here the intent is explicit.

bug:5087537
Change-Id: Ia3ddd09b6b735b8b3ceb7a347891e015fd96b218
3 files changed
tree: 63a6b36d193dc86eb6c5adc26beff3d2f6685a47
  1. core/
  2. services/