Make networks unshared in wifi_config dialog for kiosk apps and guest mode
BUG=355898
TEST=
1.1. Start a kiosk app without network connection,
1.2. when offered an option, select a WPA/WEP protected network (make sure
it's not shared)
1.3. A network configuration dialog should appear;
"Share this network with other users" checkbox should be disabled and unchecked
1.4. Enter credentials and connect.
1.5. When connected, exit and make sure that network config dialog
is shown when connecting to the same network at the login screen
2.1. Login as guest and try connecting to a WPA/WEP protected unshared network.
proceed with step 1.3.
Review URL: https://codereview.chromium.org/
232493002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@263727 0039d316-1c4b-4281-b951-d872f2087c98