Fix test.dart test.

tests/standalone/io/skipping_dart2js_compilations_test.dart

Index: tests/standalone/io/skipping_dart2js_compilations_test.dart
diff --git a/tests/standalone/io/skipping_dart2js_compilations_test.dart b/tests/standalone/io/skipping_dart2js_compilations_test.dart
index 1fd97509dfede1b822bce489e6d2f4d3ecf954b5..269999e7684c338cd9d3c4df370d117dc0236e9c 100644
--- a/tests/standalone/io/skipping_dart2js_compilations_test.dart
+++ b/tests/standalone/io/skipping_dart2js_compilations_test.dart
@@ -153,7 +153,8 @@ Command makeCompilationCommand(String testName, FileUtils fileUtils) {
   var arguments = [createFileScript, fileUtils.scriptOutputPath.toNativePath()];
   var bootstrapDeps = [Uri.parse("file://${fileUtils.testSnapshotFilePath}")];
   return Command.compilation('dart2js', fileUtils.testJsFilePath.toNativePath(),
-      false, bootstrapDeps, executable, arguments, {});
+      bootstrapDeps, executable, arguments, {},
+      alwaysCompile: false);
 }
 
 void main() {