Revert "Refactor inline_login_ui"

This reverts commit b8d871d8f2b6c46515dd79319278b49844e59a7f.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242299 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242299