Revert "Revert "Make stdout/stderr async""

runtime/bin/stdio_win.cc

 // 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.
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_WINDOWS)
 
 #include "bin/stdio.h"
 
 
@@ skipping 47 matching lines @@
   if (!GetConsoleMode(h, &mode)) return;
   if (enabled) {
     mode |= ENABLE_LINE_INPUT;
   } else {
     mode &= ~ENABLE_LINE_INPUT;
   }
   SetConsoleMode(h, mode);
 }
 
 
-bool Stdout::GetTerminalSize(int fd, int size[2]) {
-  HANDLE h;
-  if (fd == 1) {
-    h = GetStdHandle(STD_OUTPUT_HANDLE);
-  } else {
-    h = GetStdHandle(STD_ERROR_HANDLE);
-  }
+bool Stdout::GetTerminalSize(int size[2]) {
+  HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
   CONSOLE_SCREEN_BUFFER_INFO info;
   if (!GetConsoleScreenBufferInfo(h, &info)) return false;
   size[0] = info.srWindow.Right - info.srWindow.Left + 1;
   size[1] = info.srWindow.Bottom - info.srWindow.Top + 1;
   return true;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_WINDOWS)