Use as dynamic to get rid of warnigns in code_transformers
Use as dynamic to get rid of warnigns in code_transformers

R=scheglov@google.com

Review URL: https://codereview.chromium.org//451493002

git-svn-id: 03ce01c0aef5575341110df69fddd5703b005ee4@38951 260f80e4-7a28-3924-810f-c04153c831b5

dart-lang/code_transformers,dart-archive/code_transformers