Rename File.readAsText to File.readAsString. There is no Text type in Dart

sdk/lib/io/file_impl.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.
 
 class _FileInputStream extends _BaseDataInputStream implements InputStream {
   _FileInputStream(String name)
       : _data = const [],
         _position = 0,
         _filePosition = 0 {
     var file = new File(name);
@@ skipping 591 matching lines @@
     var length = opened.lengthSync();
     var result = new Uint8List(length);
     var read = opened.readListSync(result, 0, length);
     if (read != length) {
       throw new FileIOException("Failed to read file");
     }
     opened.closeSync();
     return result;
   }
 
-  Future<String> readAsText([Encoding encoding = Encoding.UTF_8]) {
+  Future<String> readAsString([Encoding encoding = Encoding.UTF_8]) {
     _ensureFileService();
     return readAsBytes().transform((bytes) {
       if (bytes.length == 0) return "";
       var decoder = _StringDecoders.decoder(encoding);
       decoder.write(bytes);
       return decoder.decoded();
     });
   }
 
-  String readAsTextSync([Encoding encoding = Encoding.UTF_8]) {
+  String readAsStringSync([Encoding encoding = Encoding.UTF_8]) {
     var decoder = _StringDecoders.decoder(encoding);
     List<int> bytes = readAsBytesSync();
     if (bytes.length == 0) return "";
     decoder.write(bytes);
     return decoder.decoded();
   }
 
   List<String> _getDecodedLines(_StringDecoder decoder) {
     List<String> result = [];
     var line = decoder.decodedLine;
@@ skipping 447 matching lines @@
           new FileIOException("File closed '$_name'"));
     });
     return completer.future;
   }
 
   final String _name;
   int _id;
 
   SendPort _fileService;
 }