Columns Don't Apply to SVG Elements

Column styling is not used on SVG elements so don't allow it to apply when parsing 
the style.

BUG=399603

Review URL: https://codereview.chromium.org/695423002

git-svn-id: svn://svn.chromium.org/blink/trunk@185066 bbb929c8-8fbe-4397-9dbb-9b2b20218538