Add source kind to the incremental cache.

pkg/analyzer/test/src/summary/test_all.dart

Index: pkg/analyzer/test/src/summary/test_all.dart
diff --git a/pkg/analyzer/test/src/summary/test_all.dart b/pkg/analyzer/test/src/summary/test_all.dart
index fe80a5adde0a9f87d49873ac589e935fc3cbda1b..08af93d7644aefac62fbe084522a65571efb3c07 100644
--- a/pkg/analyzer/test/src/summary/test_all.dart
+++ b/pkg/analyzer/test/src/summary/test_all.dart
@@ -8,6 +8,7 @@ import 'package:unittest/unittest.dart';
 
 import '../../utils.dart';
 import 'flat_buffers_test.dart' as flat_buffers_test;
+import 'incremental_cache_test.dart' as incremental_cache_test;
 import 'index_unit_test.dart' as index_unit_test;
 import 'name_filter_test.dart' as name_filter_test;
 import 'prelinker_test.dart' as prelinker_test;
@@ -22,6 +23,7 @@ main() {
   initializeTestEnvironment();
   group('summary tests', () {
     flat_buffers_test.main();
+    incremental_cache_test.main();
     index_unit_test.main();
     name_filter_test.main();
     prelinker_test.main();