Add code to run more tests from test_all

pkg/analysis_server/test/edit/test_all.dart

Index: pkg/analysis_server/test/edit/test_all.dart
diff --git a/pkg/analysis_server/test/edit/test_all.dart b/pkg/analysis_server/test/edit/test_all.dart
index 8bddf8c0ca99a85a180ac68954805cdef56cf0a2..1376ea6396c6155d4205a58dbb72853aa8bebb8e 100644
--- a/pkg/analysis_server/test/edit/test_all.dart
+++ b/pkg/analysis_server/test/edit/test_all.dart
@@ -8,19 +8,18 @@ import 'assists_test.dart' as assists_test;
 import 'fixes_test.dart' as fixes_test;
 import 'format_test.dart' as format_test;
 import 'organize_directives_test.dart' as organize_directives_test;
+import 'postfix_completion_test.dart' as postfix_completion_test;
 import 'refactoring_test.dart' as refactoring_test;
 import 'sort_members_test.dart' as sort_members_test;
 import 'statement_completion_test.dart' as statement_completion_test;
 
-/**
- * Utility for manually running all tests.
- */
 main() {
   defineReflectiveSuite(() {
     assists_test.main();
     fixes_test.main();
     format_test.main();
     organize_directives_test.main();
+    postfix_completion_test.main();
     refactoring_test.main();
     sort_members_test.main();
     statement_completion_test.main();