Repeats and fixes the changes landed & reverted as CL 1789553003.

tests/compiler/dart2js/partial_parser_test.dart

Index: tests/compiler/dart2js/partial_parser_test.dart
diff --git a/tests/compiler/dart2js/partial_parser_test.dart b/tests/compiler/dart2js/partial_parser_test.dart
index e0099f1acc33dc77885583300b3a7c8b7e8400f7..b1c4d3b70bc285367ce4087a71aad01d53dd939a 100644
--- a/tests/compiler/dart2js/partial_parser_test.dart
+++ b/tests/compiler/dart2js/partial_parser_test.dart
@@ -3,6 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import "package:expect/expect.dart";
+import 'options_helper.dart';
 import 'parser_helper.dart';
 
 void main() {
@@ -10,7 +11,8 @@ void main() {
 }
 
 void testSkipExpression() {
-  PartialParser parser = new PartialParser(new Listener());
+  PartialParser parser =
+      new PartialParser(new Listener(), new MockParserOptions());
   Token token = scan('a < b;');
   token = parser.skipExpression(token);
   Expect.equals(';', token.value);