Was originally removed in ag/522961, but restoring to keep legacy VPN
behavior the same from within VpnSettings. This dialog is only
accesible from VpnSettings and so should only ever be shown for legacy
VPNs.
Bug: 17164793
Change-Id: I06c4e136e1023b8f84edfd15a15264d2e41d325b
-The ability to launch VPNs is now sticky; once approved by the user,
further approvals are not needed UNLESS the connection is revoked in
Quick Settings.
-The old persistent notification has been removed in favor of the new
Quick Settings UI.
-The name of the VPN app is now pulled from the label of the VPN
service rather than the app itself, if one is set.
Bug: 12878887
Bug: 16578022
Change-Id: I102a14c05db26ee3aef030cda971e5165f078a91
