Add Stdio.readByteSync and Stdio.readLineSync.

sdk/lib/_internal/lib/io_patch.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.
 
 patch class _Directory {
   patch static String _current() {
     throw new UnsupportedError("Directory._current");
   }
   patch static _setCurrent(path) {
     throw new UnsupportedError("Directory_SetCurrent");
@@ skipping 271 matching lines @@
 patch class _SecureFilter {
   patch factory _SecureFilter() {
     throw new UnsupportedError("_SecureFilter._SecureFilter");
   }
   patch static SendPort _newServicePort() {
     throw new UnsupportedError("_SecureFilter._newServicePort");
   }
 }
 
 patch class _StdIOUtils {
-  patch static Stream<List<int>> _getStdioInputStream() {
+  patch static Stdio _getStdioInputStream() {
     throw new UnsupportedError("StdIOUtils._getStdioInputStream");
   }
   patch static IOSink _getStdioOutputStream(int fd) {
     throw new UnsupportedError("StdIOUtils._getStdioOutputStream");
   }
   patch static int _socketType(nativeSocket) {
     throw new UnsupportedError("StdIOUtils._socketType");
   }
 }
 
@@ skipping 10 matching lines @@
 }
 
 patch class _Filter {
   patch static _Filter newZLibDeflateFilter(bool gzip, int level) {
     throw new UnsupportedError("newZLibDeflateFilter");
   }
   patch static _Filter newZLibInflateFilter() {
     throw new UnsupportedError("newZLibInflateFilter");
   }
 }
+
+patch class Stdin {
+  patch int readByteSync() {
+    throw new UnsupportedError("Stdin.readByteSync");
+  }
+}