Make SearchMatch usable for the new index - remove the element field.

pkg/analyzer/lib/src/dart/element/builder.dart

 // Copyright (c) 2014, 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 analyzer.src.dart.element.builder;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 888 matching lines @@
     return super.visitImportDirective(node);
   }
 
   @override
   Object visitLabeledStatement(LabeledStatement node) {
     bool onSwitchStatement = node.statement is SwitchStatement;
     for (Label label in node.labels) {
       SimpleIdentifier labelName = label.label;
       LabelElementImpl element =
           new LabelElementImpl.forNode(labelName, onSwitchStatement, false);
-      _setCodeRange(element, node);
       _currentHolder.addLabel(element);
       labelName.staticElement = element;
     }
     return super.visitLabeledStatement(node);
   }
 
   @override
   Object visitLibraryDirective(LibraryDirective node) {
     _createElementAnnotations(node.metadata);
     return super.visitLibraryDirective(node);
@@ skipping 534 matching lines @@
     return null;
   }
 
   /**
    * Return the lexical identifiers associated with the given [identifiers].
    */
   static List<String> _getIdentifiers(NodeList<SimpleIdentifier> identifiers) {
     return identifiers.map((identifier) => identifier.name).toList();
   }
 }