Prepare for separate setter scope.

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/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/fasta/ast_builder.dart';
 import 'package:analyzer/src/fasta/element_store.dart';
@@ skipping 1019 matching lines @@
 class ScopeProxy implements Scope {
   final _locals = <String, Builder>{};
 
   @override
   void operator []=(String name, Builder member) {
     _locals[name] = member;
   }
 
   @override
   Scope createNestedScope({bool isModifiable: true}) {
-    return new Scope(<String, Builder>{}, this, isModifiable: isModifiable);
+    return new Scope.nested(this, isModifiable: isModifiable);
   }
 
   @override
-  Builder lookup(String name, int charOffset, Uri fileUri) =>
+  Builder lookup(String name, int charOffset, Uri fileUri,
+          {bool isInstanceScope: true}) =>
       _locals.putIfAbsent(name, () => new BuilderProxy());
 
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }
 
 /**
  * Tests of the fasta parser based on [StatementParserTestMixin].
  */
 @reflectiveTest
 class StatementParserTest_Fasta extends FastaParserTestCase
@@ skipping 140 matching lines @@
   }
 
   @override
   @failingTest
   void test_parsePartOfDirective_uri() {
     // TODO(paulberry,ahe): URIs in "part of" declarations are not supported by
     // Fasta.
     super.test_parsePartOfDirective_uri();
   }
 }