Updated to kernel changes in master.

pkg/fasta/lib/src/analyzer/mock_element.dart

 // Copyright (c) 2016, 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.
 
 library fasta.analyzer.mock_element;
 
 import 'package:analyzer/dart/element/element.dart';
 
 import '../errors.dart' show
     internalError;
@@ skipping 38 matching lines @@
   LibraryElement get library => internalError("not supported.");
 
   get location => internalError("not supported.");
 
   get metadata => internalError("not supported.");
 
   String get name => internalError("not supported.");
 
   int get nameLength => internalError("not supported.");
 
-  int get nameOffset => internalError("not supported.");
+  int get nameOffset => -1;
 
   get unit => internalError("not supported.");
 
   accept(visitor) => internalError("not supported.");
 
   String computeDocumentationComment() => internalError("not supported.");
 
   computeNode() => internalError("not supported.");
 
   Element getAncestor(predicate) => internalError("not supported.");
@@ skipping 281 matching lines @@
   List<ParameterElement> get parameters => internalError("not supported.");
 
   List<TypeParameterElement> get typeParameters {
     return internalError("not supported.");
   }
 
   void appendToWithoutDelimiters(StringBuffer buffer) {
     return internalError("not supported.");
   }
 }