Add regression test now that #9 is working.
Add regression test now that #9 is working.

BUG=https://github.com/dart-lang/dart_style/issues/9
R=nweiz@google.com

Review URL: https://chromiumcodereview.appspot.com//812103003

christofferqa/dart_style,christofferqa/dart_style,mark-henry/dart_style,alechenninger/dart_style,dart-lang/dart_style,alechenninger/dart_style,mark-henry/dart_style