We are validating the Canvas font property as a CSS style body. This was making the bellow to be parsed as valid: ctx.font = '1em serif; background: green; margin: 10px';
Created attachment 163121 [details] Patch
Comment on attachment 163121 [details] Patch Looks OK.
Comment on attachment 163121 [details] Patch Clearing flags on attachment: 163121 Committed r128076: <http://trac.webkit.org/changeset/128076>
All reviewed patches have been landed. Closing bug.