Generate common types into a separate library

pkg/analyzer_plugin/tool/spec/generate_all.dart

Index: pkg/analyzer_plugin/tool/spec/generate_all.dart
diff --git a/pkg/analyzer_plugin/tool/spec/generate_all.dart b/pkg/analyzer_plugin/tool/spec/generate_all.dart
index 234435a0a70bc7f282c76b5bcebdd2438339865d..bde26ab165bc5421fb9e2c0407c3a9c61c802713 100644
--- a/pkg/analyzer_plugin/tool/spec/generate_all.dart
+++ b/pkg/analyzer_plugin/tool/spec/generate_all.dart
@@ -10,6 +10,7 @@ import 'package:path/path.dart';
 import 'codegen_dart_protocol.dart' as codegen_dart_protocol;
 import 'codegen_inttest_methods.dart' as codegen_inttest_methods;
 import 'codegen_matchers.dart' as codegen_matchers;
+import 'codegen_protocol_common.dart' as codegen_protocol_common;
 import 'codegen_protocol_constants.dart' as codegen_protocol_constants;
 import 'to_html.dart' as to_html;
 
@@ -30,6 +31,7 @@ List<GeneratedContent> get allTargets {
   targets.add(codegen_dart_protocol.target);
   targets.add(codegen_inttest_methods.target);
   targets.add(codegen_matchers.target);
+  targets.add(codegen_protocol_common.target);
   targets.add(codegen_protocol_constants.target);
   targets.add(to_html.target);
   return targets;