Make header include guards great again

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_STDIO_H_
-#define BIN_STDIO_H_
+#ifndef RUNTIME_BIN_STDIO_H_
+#define RUNTIME_BIN_STDIO_H_
 
 #if defined(DART_IO_DISABLED)
 #error "stdio.h can only be included on builds with IO enabled"
 #endif
 
 #include "bin/builtin.h"
 #include "bin/utils.h"
 
 #include "platform/globals.h"
 
@@ skipping 21 matching lines @@
   static bool GetTerminalSize(intptr_t fd, int size[2]);
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Stdout);
 };
 
 }  // namespace bin
 }  // namespace dart
 
-#endif  // BIN_STDIO_H_
+#endif  // RUNTIME_BIN_STDIO_H_