b576296c39
Issue is that IE9 uses uppercase attribute name when it's a boolean attribute, so was getting stripped. BUG= Review URL: https://codereview.chromium.org//23661002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@26759 260f80e4-7a28-3924-810f-c04153c831b5