Add summary support for ShowElementCombinator.end and .offset.

pkg/analyzer/lib/src/summary/resynthesize.dart

 // Copyright (c) 2015, 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 summary_resynthesizer;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 1001 matching lines @@
 
   /**
    * Resynthesize a [NamespaceCombinator].
    */
   NamespaceCombinator buildCombinator(UnlinkedCombinator serializedCombinator) {
     if (serializedCombinator.shows.isNotEmpty) {
       ShowElementCombinatorImpl combinator = new ShowElementCombinatorImpl();
       // Note: we call toList() so that we don't retain a reference to the
       // deserialized data structure.
       combinator.shownNames = serializedCombinator.shows.toList();
+      combinator.offset = serializedCombinator.offset;
+      combinator.end = serializedCombinator.end;
       return combinator;
     } else {
       HideElementCombinatorImpl combinator = new HideElementCombinatorImpl();
       // Note: we call toList() so that we don't retain a reference to the
       // deserialized data structure.
       combinator.hiddenNames = serializedCombinator.hides.toList();
       return combinator;
     }
   }
 
@@ skipping 1387 matching lines @@
     List<DartType> typeArguments = const <DartType>[];
     if (numTypeArguments != 0) {
       typeArguments = <DartType>[];
       for (int i = 0; i < numTypeArguments; i++) {
         typeArguments.add(getTypeArgument(i));
       }
     }
     return typeArguments;
   }
 }