Pass slot id to Shill for manually configured WiFi with EAP-TLS.
Before, wifi_config_view directly set the shill::kEapCertIdProperty and shill::kEapKeyIdProperty. Since the system token is enabled in ChromeOS, these properties have to be of the format '<slot_id>:<key_id>' and not only '<key_id>'.
This change fixes this by reusing the client_cert::SetShillProperties function, which sets the properties in the correct format.
R=pastarmovj@chromium.org
TBR=stevenjb@chromium.org
BUG=358366, 396181
Review URL: https://codereview.chromium.org/
415483002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284914 0039d316-1c4b-4281-b951-d872f2087c98