Start using code-generated protocol classes in analysis server.

pkg/analysis_server/test/analysis_abstract.dart

Index: pkg/analysis_server/test/analysis_abstract.dart
diff --git a/pkg/analysis_server/test/analysis_abstract.dart b/pkg/analysis_server/test/analysis_abstract.dart
index e3291712779b4733fe7c213ff81a4098042bce97..689d5e20e18639a4e9827fb79f8f72daf82c253e 100644
--- a/pkg/analysis_server/test/analysis_abstract.dart
+++ b/pkg/analysis_server/test/analysis_abstract.dart
@@ -10,6 +10,7 @@ import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/domain_analysis.dart';
 import 'package:analysis_server/src/protocol.dart';
+import 'package:analysis_server/src/protocol2.dart';
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_testing/mock_sdk.dart';
 import 'package:analyzer/file_system/file_system.dart';