Make std* blocking file-descriptors.

runtime/bin/platform_macos.cc

 // Copyright (c) 2012, 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_MACOS)
 
 #include "bin/platform.h"
 
 #include <crt_externs.h>  // NOLINT
@@ skipping 52 matching lines @@
     result[current] = environ[current];
   }
   return result;
 }
 
 
 void Platform::FreeEnvironment(char** env, intptr_t count) {
   delete[] env;
 }
 
-
-void Platform::PrintBlocking(FILE* file, const char* format, ...) {
-  int fd = fileno(file);
-  FDUtils::SetBlocking(fd);
-  va_list args;
-  va_start(args, format);
-  vfprintf(file, format, args);
-  fflush(file);
-  va_end(args);
-  FDUtils::SetNonBlocking(fd);
-}
-
-
-void Platform::Cleanup() {
-  FDUtils::SetBlocking(fileno(stdout));
-  FDUtils::SetBlocking(fileno(stderr));
-}
-
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_MACOS)