Actually, all headers are. Added test that failed before this fix. BUG=17405 R=nweiz@google.com Review URL: https://codereview.chromium.org//198423002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@33635 260f80e4-7a28-3924-810f-c04153c831b5
BUG: 16582 R=dgrove@google.com, kasperl@google.com, sgjesse@google.com Review URL: https://codereview.chromium.org//156573003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@32482 260f80e4-7a28-3924-810f-c04153c831b5