Supported Google Autocomplete Clients
Possible options are chrome
, chrome-omni
, safari
, firefox
, psy-ab
, toolbar
, and youtube
.
chrome-omni
comes from chrome omnibox - address bar in chrome.

psy-ab
is used in when google is opened in google chrome.
safari
is used in when google is opened in safari.
firefox
is used in when google is opened in firefox.
youtube
origin unknown. Returns JSONP.
toolbar
origin unknown. Returns XML.