anchor.diff:      if (!isLibraryDefinition && optionsFromFile['containsSourceOrImport']) {
         print('Warning for $filename: Browser tests require #library ' +
               'in any file that uses #import or #source');
  -    }      
  +    }
   
       final String component = configuration['component'];
       final String testPath = new File(filename).fullPathSync();
  
positive.code:           expectations,
            optionsFromFile['isNegative']);
        doTest(testCase);
      }        
    }
  
    /***
  
negative.code:     if (new Platform().operatingSystem() == 'macos') {
        return 'client/tests/drt/DumpRenderTree.app/Contents/' +
            'MacOS/DumpRenderTree';
      }
      return 'client/tests/drt/DumpRenderTree';
    }
  
  