jmesserly@google.com
9fa9329f90
code is from https://github.com/dart-lang/web-ui/blob/polymer/lib/custom_element.dart Includes a test for the polyfill. It also includes a static analysis test to catch the common errors of forgetting to add an Element API. Because we had analysis errors in "observe" and "mdv" packages too, I added tests for them too, and fixed the issues. R=sigmund@google.com Review URL: https://codereview.chromium.org//20886002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@25591 260f80e4-7a28-3924-810f-c04153c831b5