Updating polymer to use latest code_transformers

BUG=
R=sigmund@google.com

Review URL: https://codereview.chromium.org//206373008

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@34200 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed