Fix spacing in create profile dialog.

BUG=335051
TEST=open create profile dialog, observe spacing above create button.

Review URL: https://codereview.chromium.org/140863002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245300 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245300