640e0ee99b
Fixes a few places that assumes libraries can be compilation units. - VoidElement now belongs to the entry compilation unit of the core library. - Abstract fields now belong to the compilation unit of the creating accessor. Review URL: https://chromiumcodereview.appspot.com//10834330 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@10711 260f80e4-7a28-3924-810f-c04153c831b5