Revert 226476 "Introduce CrosBrowserWithOOBE, which exposes an o..."

> Introduce CrosBrowserWithOOBE, which exposes an oobe property.
> 
> This is only visible when the create_browser_with_oobe browser option is specified.
> 
> BUG=294183
> TEST=manual
> 
> Review URL: https://codereview.chromium.org/23619077

TBR=achuith@chromium.org

Review URL: https://codereview.chromium.org/25417008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226833 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226833