Add utilities for creating SourceChanges

pkg/analysis_server/test/test_all.dart

Index: pkg/analysis_server/test/test_all.dart
diff --git a/pkg/analysis_server/test/test_all.dart b/pkg/analysis_server/test/test_all.dart
index 862b77fc23466c53538223afb29c5b0adb4749d1..9307059165dd7b47203d46461666410841b4d22d 100644
--- a/pkg/analysis_server/test/test_all.dart
+++ b/pkg/analysis_server/test/test_all.dart
@@ -20,6 +20,7 @@ import 'search/test_all.dart' as search_all;
 import 'services/test_all.dart' as services_all;
 import 'socket_server_test.dart' as socket_server_test;
 import 'source/test_all.dart' as source_all;
+import 'src/test_all.dart' as src_all;
 
 /**
  * Utility for manually running all tests.
@@ -43,5 +44,6 @@ main() {
     services_all.main();
     socket_server_test.main();
     source_all.main();
+    src_all.main();
   });
 }