Add white-listing to sourcemap tests.

tests/compiler/dart2js/sourcemaps/source_mapping_invokes_test.dart

Index: tests/compiler/dart2js/sourcemaps/source_mapping_invokes_test.dart
diff --git a/tests/compiler/dart2js/sourcemaps/source_mapping_invokes_test.dart b/tests/compiler/dart2js/sourcemaps/source_mapping_invokes_test.dart
index 20359e4017ce6ebe809ac04e0bb4da488dd6b8a4..ce4d3620020a05c611150f14bb74046f48647158 100644
--- a/tests/compiler/dart2js/sourcemaps/source_mapping_invokes_test.dart
+++ b/tests/compiler/dart2js/sourcemaps/source_mapping_invokes_test.dart
@@ -2,8 +2,18 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'source_mapping_tester.dart' as tester;
+import 'source_mapping_tester.dart';
+import 'sourcemap_helper.dart';
+import 'package:compiler/src/io/position_information.dart';
 
 void main() {
-  tester.main(['invokes']);
+  test(['invokes'], whiteListFunction: (String config, String file) {
+    if (config == 'cps') {
+      return (CodePoint codePoint) {
+        // Temporarily allow missing code points on expression statements.
+        return codePoint.kind == StepKind.EXPRESSION_STATEMENT;
+      };
+    }
+    return emptyWhiteList;
+  });
 }