Added DebugLogger to testing scripts.

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 252 matching lines @@
               [],
               ''),
           new _TestOptionSpecification(
               'noBatch',
               'Do not run browser tests in batch mode',
               ['-n', '--nobatch'],
               [],
               false,
               'bool'),
           new _TestOptionSpecification(
-              'append_flaky_log',
-              'Do not delete the old flaky log but rather append to it.',
-              ['--append_flaky_log'],
+              'append_logs',
+              'Do not delete old logs but rather append to them.',
+              ['--append_logs'],
               [],
               false,
               'bool'
+              ),
+          new _TestOptionSpecification(
+              'write_debug_log',
+              'Don\'t write debug messages to stdout but rather to a logfile.',
+              ['--write-debug-log'],
+              [],
+              false,
+              'bool'
               ),];
   }
 
 
   /**
    * Parse a list of strings as test options.
    *
    * Returns a list of configurations in which to run the
    * tests. Configurations are maps mapping from option keys to
    * values. When encountering the first non-option string, the rest
@@ skipping 380 matching lines @@
         return option;
       }
     }
     print('Unknown test option $name');
     exit(1);
   }
 
 
   List<_TestOptionSpecification> _options;
 }