Add getter for hasTerminal, terminalColumns and terminalLines on stdout.

runtime/bin/stdio.h

Index: runtime/bin/stdio.h
diff --git a/runtime/bin/stdin.h b/runtime/bin/stdio.h
similarity index 74%
rename from runtime/bin/stdin.h
rename to runtime/bin/stdio.h
index a0c68757525134cb019a7269f960209cc0e84018..646629d299a3306bcdf0b595f9c85fbc7cc54cef 100644
--- a/runtime/bin/stdin.h
+++ b/runtime/bin/stdio.h
@@ -2,8 +2,8 @@
 // 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"
@@ -29,8 +29,18 @@ class Stdin {
   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_