Add browser path options to testing scripts.

tools/testing/dart/test_suite.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // 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.
 
 /**
  * Classes and methods for enumerating and preparing tests.
  *
  * This library includes:
  *
  * - Creating tests by listing all the Dart files in certain directories,
@@ skipping 1092 matching lines @@
               runtime, fullHtmlPath, TestUtils.dartTestExecutable.toString(),
               args, configurationDir, checkedMode: configuration['checked']));
         } else if (TestUtils.usesWebDriver(runtime)) {
           args = [
               dartDir.append('tools/testing/run_selenium.py').toNativePath(),
               '--browser=$runtime',
               // NOTE: This value will be overridden by the test runner
               '--timeout=${configuration['timeout']}',
               '--out=$fullHtmlPath'];
           if (runtime == 'dartium') {
-            var dartiumLocation = Locations.getDartiumLocation(configuration);
+            var dartiumLocation =
+                Locations.getBrowserLocation('dartium', configuration);
             args.add('--executable=$dartiumLocation');
           }
           if (subtestIndex != 0) {
             args.add('--force-refresh');
           }
           commandSet.add(CommandBuilder.instance.getSeleniumTestCommand(
                   runtime, fullHtmlPath, 'python', args, configurationDir));
         } else {
           assert(runtime == "drt");
 
@@ skipping 937 matching lines @@
  * $pass tests are expected to pass
  * $failOk tests are expected to fail that we won't fix
  * $fail tests are expected to fail that we should fix
  * $crash tests are expected to crash that we should fix
  * $timeout tests are allowed to timeout
  * $compileErrorSkip tests are skipped on browsers due to compile-time error
 """;
     print(report);
    }
 }