Add opera as an option to --browser

tools/testing/dart/test_options.dart

 // Copyright (c) 2011, 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");
 
 List<String> defaultTestSelectors =
     const ['dartc', 'samples', 'standalone', 'corelib', 'co19', 'language',
@@ skipping 147 matching lines @@
               'time',
               'Print timing information after running tests',
               ['--time'],
               [],
               false,
               'bool'),
           new _TestOptionSpecification(
               'browser',
               'Web browser to use on webdriver tests',
               ['-b', '--browser'],
-              ['ff', 'chrome', 'safari', 'ie'],
+              ['ff', 'chrome', 'safari', 'ie', 'opera'],

[Emily Fortuna, 2012/02/10 19:08:19]

lgtm! We'll also want to add this option to run_selenium.py, but I suppose we
can wait until we're really implementing it to do that.

               'chrome'),
           new _TestOptionSpecification(
               'frog',
               'Path to frog executable',
               ['--frog'],
               [],
               ''),
           new _TestOptionSpecification(
               'drt',
               'Path to DumpRenderTree executable',
@@ skipping 316 matching lines @@
         return option;
       }
     }
     print('Unknown test option $name');
     exit(1);
   }
 
 
   List<_TestOptionSpecification> _options;
 }