Don't replicate timeout calculation for browser tests. They do their own timing

tools/testing/dart/test_options.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.
 
 #library("test_options_parser");
 
 #import("dart:io");
 #import("dart:math");
 #import("drt_updater.dart");
 #import("test_suite.dart");
@@ skipping 545 matching lines @@
           }
           if (configuration['host_checked']) {
             timeout *= 16;
           }
           if (configuration['checked']) {
             timeout *= 2;
           }
           if (Contains(configuration['runtime'],
                        const ['ie9', 'ie10', 'ff', 'chrome', 'safari',
                               'opera'])) {
-            // TODO(ahe): Restore the timeout to 8 times the original timeout
-            // when dart2js compile-time performance has improved.
-            timeout *= 12; // Allow additional time for browser testing to run.

[Emily Fortuna, 2012/10/23 22:23:48]

This file is just a revert of a previous debugging test I added.

+            timeout *= 8; // Allow additional time for browser testing to run.
           }
           break;
         default:
           if (configuration['mode'] == 'debug') {
             timeout *= 2;
           }
           if (Contains(configuration['runtime'], const ['drt', 'dartium'])) {
             timeout *= 4; // Allow additional time for browser testing to run.
           }
           break;
@@ skipping 72 matching lines @@
         return option;
       }
     }
     print('Unknown test option $name');
     exit(1);
   }
 
 
   List<_TestOptionSpecification> _options;
 }