[pyauto] GetBrowserInfo() should be usable at chromeos login screen

GetBrowserInfo() should not be tied to a chrome window, so that it can be used at chromeos login screen.

BUG=None
TEST=None

R=dtu@chromium.org

Review URL: http://codereview.chromium.org/7747014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@98374 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed