Remove other usages of ExecutableElement.localVariables.

pkg/analyzer/test/src/dart/analysis/search_test.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.
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
@@ skipping 595 matching lines @@
   test_searchReferences_LocalVariableElement() async {
     await _resolveTestUnit(r'''
 main() {
   var v;
   v = 1;
   v += 2;
   print(v);
   v();
 }
 ''');
-    Element element = _findElement('v');
+    Element element = _findElementAtString('v;');
     Element main = _findElement('main');
     var expected = [
       _expectId(main, SearchResultKind.WRITE, 'v = 1;'),
       _expectId(main, SearchResultKind.READ_WRITE, 'v += 2;'),
       _expectId(main, SearchResultKind.READ, 'v);'),
       _expectId(main, SearchResultKind.INVOCATION, 'v();')
     ];
     await _verifyReferences(element, expected);
   }
 
@@ skipping 638 matching lines @@
     List<SearchResult> results = await driver.search.references(element);
     _assertResults(results, expectedMatches);
     expect(results, hasLength(expectedMatches.length));
   }
 
   static void _assertResults(
       List<SearchResult> matches, List<ExpectedResult> expectedMatches) {
     expect(matches, unorderedEquals(expectedMatches));
   }
 }