dart2js: run dartfmt on tests

tests/compiler/dart2js/parser_test.dart

Index: tests/compiler/dart2js/parser_test.dart
diff --git a/tests/compiler/dart2js/parser_test.dart b/tests/compiler/dart2js/parser_test.dart
index 762d07417b9f82a026122bcf169f1bb940ceb18b..1820de45aaa901a7c2d06f30917a3374558a0037 100644
--- a/tests/compiler/dart2js/parser_test.dart
+++ b/tests/compiler/dart2js/parser_test.dart
@@ -304,8 +304,7 @@ class Collector extends DiagnosticReporter {
     throw this;
   }
 
-  void reportError(
-      DiagnosticMessage message,
+  void reportError(DiagnosticMessage message,
       [List<DiagnosticMessage> infos = const <DiagnosticMessage>[]]) {
     reportFatalError(message.spannable);
   }
@@ -319,15 +318,14 @@ class Collector extends DiagnosticReporter {
   }
 
   @override
-  DiagnosticMessage createMessage(
-      spannable, messageKind, [arguments = const {}]) {
+  DiagnosticMessage createMessage(spannable, messageKind,
+      [arguments = const {}]) {
     return new DiagnosticMessage(null, spannable, null);
   }
 }
 
 void testMissingCloseParen() {
-  final String source =
-'''foo(x {  // <= missing closing ")"
+  final String source = '''foo(x {  // <= missing closing ")"
   return x;
 }''';
   parse() {