Rename unsubscribeOnError to cancelOnError.

sdk/lib/io/file_impl.dart

 // Copyright (c) 2013, 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.
 
 part of dart.io;
 
 // Read the file in blocks of size 64k.
 const int _BLOCK_SIZE = 64 * 1024;
 
 
@@ skipping 20 matching lines @@
     _setupController();
   }
 
   _FileStream.forStdin() : _position = 0 {
     _setupController();
   }
 
   StreamSubscription<List<int>> listen(void onData(List<int> event),
                                        {void onError(AsyncError error),
                                         void onDone(),
-                                        bool unsubscribeOnError}) {
+                                        bool cancelOnError}) {
     return _controller.stream.listen(onData,
                                      onError: onError,
                                      onDone: onDone,
-                                     unsubscribeOnError: unsubscribeOnError);
+                                     cancelOnError: cancelOnError);
   }
 
   void _setupController() {
     _controller = new StreamController<List<int>>(
         onSubscriptionStateChange: _onSubscriptionStateChange,
         onPauseStateChange: _onPauseStateChange);
   }
 
   Future _closeFile() {
     Future closeFuture;
@@ skipping 119 matching lines @@
                 completer.completeError(e);
               });
           },
           onDone: () {
             completer.complete(_file);
           },
           onError: (e) {
             openedFile.close();
             completer.completeError(e);
           },
-          unsubscribeOnError: true);
+          cancelOnError: true);
       })
       .catchError((e) {
         completer.completeError(e);
       });
     return completer.future;
   }
 
   Future<File> close() {
     return _openFuture.then((openedFile) => openedFile.close());
   }
@@ skipping 294 matching lines @@
     openRead().listen(
       (d) => chunks.add(d),
       onDone: () {
         var result = chunks.readBytes(chunks.length);
         if (result == null) result = <int>[];
         completer.complete(result);
       },
       onError: (e) {
         completer.completeError(e);
       },
-      unsubscribeOnError: true);
+      cancelOnError: true);
     return completer.future;
   }
 
   List<int> readAsBytesSync() {
     var opened = openSync();
     var chunks = new _BufferList();
     var data;
     while ((data = opened.readSync(_BLOCK_SIZE)).length > 0) {
       chunks.add(data);
     }
@@ skipping 541 matching lines @@
           new FileIOException("File closed '$_path'"));
     });
     return completer.future;
   }
 
   final String _path;
   int _id;
 
   SendPort _fileService;
 }