Add getter for hasTerminal, terminalColumns and terminalLines on stdout.

runtime/bin/stdio.h

 // 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.
 
-#ifndef BIN_STDIN_H_
-#define BIN_STDIN_H_
+#ifndef BIN_STDIO_H_
+#define BIN_STDIO_H_
 
 #include "bin/builtin.h"
 #include "bin/utils.h"
 
 #include "platform/globals.h"
 
 
 namespace dart {
 namespace bin {
 
 class Stdin {
  public:
   static int ReadByte();
 
   static bool GetEchoMode();
   static void SetEchoMode(bool enabled);
 
   static bool GetLineMode();
   static void SetLineMode(bool enabled);
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Stdin);
 };
 
+
+class Stdout {
+ public:
+  static bool GetTerminalSize(int size[2]);
+
+ private:
+  DISALLOW_ALLOCATION();
+  DISALLOW_IMPLICIT_CONSTRUCTORS(Stdout);
+};
+
 }  // namespace bin
 }  // namespace dart
 
-#endif  // BIN_STDIN_H_
+#endif  // BIN_STDIO_H_