Remove deprecated StringBuffer.add, addAll and addCharCode.

Review URL: https://codereview.chromium.org//12473003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/yaml@19690 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed
tree: 16f7f3a5884e226081b69da41f46633e1ec32135
  1. pkgs/