Ground work for addition to new listener api

Ground work for addition to new listener api

Committed: https://code.google.com/p/dart/source/detail?r=438

[Brian Wilkerson, 2011-10-13 22:17:28]

I didn't see anywhere where you were testing to see whether the right
compilation units were being reported, but other than that LGTM.

Thanks for fixing the subclasses in the editor!

[Brian Wilkerson, 2011-10-14 13:22:31]

Aside from the lack of documentation and the lack of tests for the new listener
method, both of which can be addressed later if need be, it LGTM.

http://codereview.chromium.org/8285004/diff/1/compiler/java/com/google/dart/c...
File compiler/java/com/google/dart/compiler/DartCompilerListener.java (right):

http://codereview.chromium.org/8285004/diff/1/compiler/java/com/google/dart/c...
compiler/java/com/google/dart/compiler/DartCompilerListener.java:28: public
abstract void unitCompiled(DartUnit unit);
It would be nice if all of the methods in this interface were well documented,
both with guarantees from the compiler as well as requirements on the
implementor.