anchor.diff:                ['--checked'],
                 [],
                 false,
  -              'bool'),
  +              type: 'bool'),
             new _TestOptionSpecification(
                 'host_checked',
                 'Run compiler in checked mode',
                 ['--host-checked'],
                 [],
                 false,
  -              'bool'),
  +              type: 'bool'),
             new _TestOptionSpecification(
                 'minified',
                 'Enable minification in the compiler',
                 ['--minified'],
                 [],
                 false,
  -              'bool'),
  +              type: 'bool'),
             new _TestOptionSpecification(
                 'csp',
                 'Run tests under Content Security Policy restrictions',
                 ['--csp'],
                 [],
                 false,
  -              'bool'),
  +              type: 'bool'),
             new _TestOptionSpecification(
                 'timeout',
                 'Timeout in seconds',
                 ['-t', '--timeout'],
                 [],
                 -1,
  -              'int'),
  +              type: 'int'),
             new _TestOptionSpecification(
                 'progress',
                 'Progress indication mode',
  
positive.code:               ['--use-sdk'],
                [],
                false,
                'bool'),
            new _TestOptionSpecification(
                'use_public_packages',
                'For tests using packages: Use pub.dartlang.org packages '
  
negative.code:               ['--failure-summary'],
                [],
                false,
                type: 'bool'),
            new _TestOptionSpecification(
                'step_name',
                'Step name for use by -pbuildbot',
  