Try to fix Windows Dartium build again

runtime/bin/platform_win.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_WINDOWS)
 
 #include "bin/platform.h"
 
 #include "bin/file.h"
 #include "bin/log.h"
-#if !defined(PLATFORM_DISABLE_SOCKET)
+#if !defined(DART_IO_DISABLED) && !defined(PLATFORM_DISABLE_SOCKET)
 #include "bin/socket.h"
 #endif
 #include "bin/utils.h"
 #include "bin/utils_win.h"
 
 namespace dart {
 
 // Defined in vm/os_thread_win.cc
 extern bool private_flag_windows_run_tls_destructors;
 
@@ skipping 21 matching lines @@
   return "windows";
 }
 
 
 const char* Platform::LibraryExtension() {
   return "dll";
 }
 
 
 bool Platform::LocalHostname(char *buffer, intptr_t buffer_length) {
-#if defined(PLATFORM_DISABLE_SOCKET)
+#if defined(DART_IO_DISABLED) || defined(PLATFORM_DISABLE_SOCKET)
   return false;
 #else
   if (!Socket::Initialize()) {
     return false;
   }
   return gethostname(buffer, buffer_length) == 0;
 #endif
 }
 
 
@@ skipping 56 matching lines @@
   ::dart::private_flag_windows_run_tls_destructors = false;
   // On Windows we use ExitProcess so that threads can't clobber the exit_code.
   // See: https://code.google.com/p/nativeclient/issues/detail?id=2870
   ::ExitProcess(exit_code);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_WINDOWS)