Prepare for decoupling analyzer ASTs from element model.

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/resolution_accessors.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/search.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/dart/element/member.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'base.dart';
 
@@ skipping 152 matching lines @@
     driver.addFile(other);
 
     await _resolveTestUnit('''
 class A {
   A() {}
 }
 ''');
     ConstructorElement element = _findElementAtString('A() {}');
 
     CompilationUnit otherUnit = (await driver.getResult(other)).unit;
-    Element main = otherUnit.element.functions[0];
+    Element main = elementForCompilationUnit(otherUnit).functions[0];
     var expected = [
       new ExpectedResult(main, SearchResultKind.REFERENCE,
           otherCode.indexOf('(); // in other'), 0,
           isResolved: true, isQualified: true)
     ];
     await _verifyReferences(element, expected);
   }
 
   test_searchReferences_ConstructorElement_named() async {
     await _resolveTestUnit('''
@@ skipping 660 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));
   }
 }