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

sdk/lib/io/file.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.
 
 
 /**
  * FileMode describes the modes in which a file can be opened.
  */
 class FileMode {
   static const READ = const FileMode._internal(0);
@@ skipping 166 matching lines @@
    * is the contents of the file.
    */
   Future<List<int>> readAsBytes();
 
   /**
    * Synchronously read the entire file contents as a list of bytes.
    */
   List<int> readAsBytesSync();
 
   /**
-   * Read the entire file contents as text using the given
+   * Read the entire file contents as a string using the given
    * [encoding].
    *
    * Returns a [:Future<String>:] that completes with the string once
    * the file contents has been read.
    */
-  Future<String> readAsText([Encoding encoding = Encoding.UTF_8]);
+  Future<String> readAsString([Encoding encoding = Encoding.UTF_8]);
 
   /**
-   * Synchronously read the entire file contents as text using the
+   * Synchronously read the entire file contents as a string using the
    * given [encoding].
    */
-  String readAsTextSync([Encoding encoding = Encoding.UTF_8]);
+  String readAsStringSync([Encoding encoding = Encoding.UTF_8]);
 
   /**
    * Read the entire file contents as lines of text using the give
    * [encoding].
    *
    * Returns a [:Future<List<String>>:] that completes with the lines
    * once the file contents has been read.
    */
   Future<List<String>> readAsLines([Encoding encoding = Encoding.UTF_8]);
 
@@ skipping 170 matching lines @@
         sb.add(" ($osError)");
       }
     } else if (osError != null) {
       sb.add(": osError");
     }
     return sb.toString();
   }
   final String message;
   final OSError osError;
 }