RFC: introduce dart:js
RFC: introduce dart:js

This is a port of js-interop with an optimized dart2js compilation.
It also gets rid of noSuchMethod.
I also made some renamings inspired by https://github.com/dart-lang/js-interop/issues/68

BUG=
R=vsm@google.com

Review URL: https://codereview.chromium.org//15782009

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@25018 260f80e4-7a28-3924-810f-c04153c831b5

dart-archive/browser