add: chan.contentType = special_type; 
context: function test_read_file() {  dump("*** test_read_file\n");  var file = getFile("XpcomLib");  var chan = new_file_channel(file);  function on_read_complete(data) {    dump("*** test_read_file.on_read_complete\n");    /* read completed successfully.  now read data directly from file,       and compare the result. */    var stream = new_file_input_stream(file, false);       var result = read_stream(stream, stream.available());    if (result != data)      do_throw("Stream contents do not match with direct read!");    run_next_test();  }  chan.asyncOpen(new Listener(on_read_complete), null);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/7d20ed1ad6a8ef110361df3d529a96f217b4d074/test_file_protocol.js/buggy/netwerk/test/unit/test_file_protocol.js