Add debug names to scopes.

pkg/analyzer/test/generated/parser_fasta_test.dart

 // Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart' as analyzer;
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/error/listener.dart' show ErrorReporter;
 import 'package:analyzer/src/dart/scanner/scanner.dart';
 import 'package:analyzer/src/fasta/ast_builder.dart';
@@ skipping 849 matching lines @@
 /**
  * Proxy implementation of [Scope] used by Fasta parser tests.
  *
  * Any name lookup request is satisfied by creating an instance of
  * [BuilderProxy].
  */
 class ScopeProxy implements Scope {
   final _locals = <String, Builder>{};
 
   @override
-  Scope createNestedScope({bool isModifiable: true}) {
-    return new Scope.nested(this, isModifiable: isModifiable);
+  Scope createNestedScope(String debugName, {bool isModifiable: true}) {
+    return new Scope.nested(this, debugName, isModifiable: isModifiable);
   }
 
   @override
   declare(String name, Builder builder, int charOffset, Uri fileUri) {
     _locals[name] = builder;
     return null;
   }
 
   @override
   Builder lookup(String name, int charOffset, Uri fileUri,
@@ skipping 142 matching lines @@
     assertNoErrors();
   }
 
   @failingTest
   void test_parseCompilationUnitMember_abstractAsPrefix2() {
     // TODO(danrubel): should not be generating an error
     super.test_parseCompilationUnitMember_abstractAsPrefix();
     assertNoErrors();
   }
 }