Apply Siggi's comments (compile also for drt step).

tools/testing/dart/test_suite.dart

Index: tools/testing/dart/test_suite.dart
===================================================================
--- tools/testing/dart/test_suite.dart	(revision 5911)
+++ tools/testing/dart/test_suite.dart	(working copy)
@@ -519,7 +519,7 @@
       // Construct the command(s) that compile all the inputs needed by the
       // browser test. For running Dart in DRT, this will be noop commands.
       List<Command> commands = [];
-      if (compiler != 'none' && runtime != 'drt') {
+      if (compiler != 'none' ) {
         commands.add(_compileCommand(
             dartWrapperFilename, compiledDartWrapperFilename,
             compiler, tempDir.path, vmOptions));