Further integration of front end type inference into analyzer.

pkg/front_end/lib/src/fasta/source/stack_listener.dart

Index: pkg/front_end/lib/src/fasta/source/stack_listener.dart
diff --git a/pkg/front_end/lib/src/fasta/source/stack_listener.dart b/pkg/front_end/lib/src/fasta/source/stack_listener.dart
index a64357375bc215ebe73bd265f041ca0c668a18fc..81533c2501618627a2ac09e3208f82bf8e7bb119 100644
--- a/pkg/front_end/lib/src/fasta/source/stack_listener.dart
+++ b/pkg/front_end/lib/src/fasta/source/stack_listener.dart
@@ -68,6 +68,12 @@ abstract class StackListener extends Listener {
     return unsupported("finishFunction", -1, uri);
   }
 
+  // TODO(ahe): This doesn't belong here. Only implemented by body_builder.dart
+  // and ast_builder.dart.
+  dynamic finishFields() {
+    return unsupported("finishFields", -1, uri);
+  }
+
   // TODO(ahe): This doesn't belong here. Only implemented by body_builder.dart
   // and ast_builder.dart.
   List<Expression> finishMetadata() {