Interesting changes:
- A static getter colliding with an inherited non-static setter is a
compile error, not a type warning.
- Trying to call a setter on what is only a getter is a compile error
with no runtime behavior.
- Add support to test.dart for negative tests in DDC.
BUG=
R=jcollins@google.com
Review-Url: https://codereview.chromium.org/3005643002 .
Bob Nystrom