Remove the LineTransformer from dart:io

tests/standalone/io/string_transformer_test.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.
 
-import "package:expect/expect.dart";
 import "dart:async";
+import "dart:convert";
 import "dart:io";
 import "dart:isolate";
 import "dart:utf";
 
+import "package:expect/expect.dart";
+
 void main() {
   testUtf8();
   testLatin1();
   testAscii();
   testReadLine1();
   testReadLine2();
   testErrorHandler();
   testLatin1EncoderError();
 }
 
@@ skipping 73 matching lines @@
     Expect.equals("Dart", s.substring(1, 5));
     Expect.equals(new String.fromCharCodes([0x7f]), s[5]);
     Expect.equals('????', s.substring(6, 10));
   });
 }
 
 void testReadLine1() {
   var controller = new StreamController(sync: true);
   var stream = controller.stream
       .transform(new StringDecoder())
-      .transform(new LineTransformer());
+      .transform(new LineSplitter());
 
   var stage = 0;
 
   void stringData(line) {
     Expect.equals(stage, 0);
     Expect.equals("Line", line);
     stage++;
   }
 
   void streamClosed() {
     Expect.equals(1, stage);
   }
 
   stream.listen(
       stringData,
       onDone: streamClosed);
 
   // Note: codeUnits is fine. Text is ASCII.
   controller.add("Line".codeUnits);
   controller.close();
   Expect.equals(1, stage);
 }
 
 void testReadLine2() {
   var controller = new StreamController(sync: true);
 
   var stream = controller.stream
     .transform(new StringDecoder())
-    .transform(new LineTransformer());
+    .transform(new LineSplitter());
 
   var expectedLines = ['Line1', 'Line2','Line3', 'Line4',
                        '', '', '', '', '', '',
                        'Line5', 'Line6'];
 
   var index = 0;
 
   stream.listen((line) {
     Expect.equals(expectedLines[index++], line);
   });
@@ skipping 10 matching lines @@
 
 class TestException implements Exception {
   TestException();
 }
 
 void testErrorHandler() {
   var controller = new StreamController(sync: true);
   var errors = 0;
   var stream = controller.stream
     .transform(new StringDecoder())
-    .transform(new LineTransformer());
+    .transform(new LineSplitter());
   stream.listen(
       (_) {},
       onDone: () {
         Expect.equals(1, errors);
       },
       onError: (error) {
         errors++;
         Expect.isTrue(error is TestException);
       });
   controller.addError(new TestException());
@@ skipping 14 matching lines @@
     .transform(new StringEncoder(Encoding.ISO_8859_1));
   stream.listen(
     (s) {
       Expect.fail("data not expected");
     },
     onError: (error) {
       Expect.isTrue(error is FormatException);
     });
 
 }