Change imports etc to new syntax.

utils/testrunner/options.dart

Index: utils/testrunner/options.dart
===================================================================
--- utils/testrunner/options.dart	(revision 13306)
+++ utils/testrunner/options.dart	(working copy)
@@ -2,6 +2,8 @@
 // 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.
 
+part of testrunner;
+
 /** Create and return an options parser for the test runner. */
 ArgParser getOptionParser() {
   var parser = new ArgParser();