Fix Windows build

runtime/platform/globals.h

 // 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.
 
 #ifndef PLATFORM_GLOBALS_H_
 #define PLATFORM_GLOBALS_H_
 
 // __STDC_FORMAT_MACROS has to be defined to enable platform independent printf.
 #ifndef __STDC_FORMAT_MACROS
 #define __STDC_FORMAT_MACROS
 #endif
 
 #if defined(_WIN32)
 // Cut down on the amount of stuff that gets included via windows.h.
 #define WIN32_LEAN_AND_MEAN
 #define NOMINMAX
 #define NOKERNEL
 #define NOUSER
 #define NOSERVICE
 #define NOSOUND
 #define NOMCX
 
 #include <windows.h>
 #include <Rpc.h>
 #endif
 
 #if !defined(_WIN32)
 #include <inttypes.h>
 #include <stdint.h>
+#include <unistd.h>
 #endif
 
 #include <float.h>
 #include <limits.h>
 #include <math.h>
 #include <openssl/bn.h>
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
-#include <unistd.h>
 
 #if defined(_WIN32)
 #include "platform/c99_support_win.h"
 #include "platform/inttypes_support_win.h"
 #endif
 
 
 // Target OS detection.
 // for more information on predefined macros:
 //   - http://msdn.microsoft.com/en-us/library/b0084kay.aspx
@@ skipping 57 matching lines @@
 // separate lines with body in {}s).
 # define TEMP_FAILURE_RETRY(expression)                                        \
     ({ int64_t __result;                                                       \
        do {                                                                    \
          __result = (int64_t) (expression);                                    \
        } while (__result == -1L && errno == EINTR);                            \
        __result; })
 #endif
 
 #endif  // PLATFORM_GLOBALS_H_