Update parser_fasta_test in pkg/analyzer.

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/element/element.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:front_end/src/fasta/analyzer/ast_builder.dart';
 import 'package:front_end/src/fasta/analyzer/element_store.dart';
 import 'package:front_end/src/fasta/builder/scope.dart';
@@ skipping 315 matching lines @@
 }
 
 /**
  * Proxy implementation of [KernelLibraryBuilderProxy] used by Fasta parser
  * tests.
  */
 class KernelLibraryBuilderProxy implements KernelLibraryBuilder {
   @override
   final uri = Uri.parse('file:///test.dart');
 
+  @override
+  Uri get fileUri => uri;
+
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }
 
 /**
  * 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>{};
 
-  Builder lookup(String name) =>
+  @override
+  Builder lookup(String name, int charOffset, Uri fileUri) =>
       _locals.putIfAbsent(name, () => new BuilderProxy());
 
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }