Start using the new index in Analysis Server.

pkg/analysis_server/lib/src/analysis_server.dart

Index: pkg/analysis_server/lib/src/analysis_server.dart
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index 84e8c5c0a80c27fb726f9bc370b1738e42cdc278..b4abb4dd99788c1a2489d98add7387c7407d9f6e 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -22,6 +22,7 @@ import 'package:analysis_server/src/services/correction/namespace.dart';
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index2/index2.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
+import 'package:analysis_server/src/services/search/search_engine_internal2.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
@@ -322,7 +323,7 @@ class AnalysisServer {
       this.rethrowExceptions: true})
       : index = _index,
         index2 = _index2,
-        searchEngine = _index != null ? createSearchEngine(_index) : null {
+        searchEngine = _index != null ? new SearchEngineImpl2(_index2) : null {
     _performance = performanceDuringStartup;
     defaultContextOptions.incremental = true;
     defaultContextOptions.incrementalApi =