Replace computeNode() with AstProvider in search.

pkg/analysis_server/test/services/search/hierarchy_test.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 test.services.src.search.hierarchy;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/search/hierarchy.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_server/src/services/search/search_engine_internal.dart';
 import 'package:analysis_server/src/services/search/search_engine_internal2.dart';
 import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/src/dart/analysis/ast_provider_context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../../abstract_single_unit.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(HierarchyTest);
     defineReflectiveTests(HierarchyTest_Driver);
   });
@@ skipping 336 matching lines @@
 }
 
 @reflectiveTest
 class HierarchyTest extends AbstractHierarchyTest {
   Index index;
   SearchEngineImpl searchEngine;
 
   void setUp() {
     super.setUp();
     index = createMemoryIndex();
-    searchEngine = new SearchEngineImpl(index);
+    searchEngine =
+        new SearchEngineImpl(index, (_) => new AstProviderForContext(context));
   }
 
   Future<Null> _indexTestUnit(String code) async {
     await resolveTestUnit(code);
     index.indexUnit(testUnit);
   }
 }
 
 @reflectiveTest
 class HierarchyTest_Driver extends AbstractHierarchyTest {
   SearchEngineImpl2 searchEngine;
 
   @override
   bool get enableNewAnalysisDriver => true;
 
   void setUp() {
     super.setUp();
     searchEngine = new SearchEngineImpl2([driver]);
   }
 
   @override
   Future<Null> _indexTestUnit(String code) async {
     await resolveTestUnit(code);
   }
 }