Fix windows build.

runtime/include/dart_api.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 INCLUDE_DART_API_H_
 #define INCLUDE_DART_API_H_
 
 /** \mainpage Dart Embedding API Reference
  *
  * Dart is a class-based programming language for creating structured
  * web applications. This reference describes the Dart embedding api,
  * which is used to embed the Dart Virtual Machine within an
  * application.
  *
  * This reference is generated from the header include/dart_api.h.
  */
 
 #ifdef __cplusplus
 #define DART_EXTERN_C extern "C"
 #else
 #define DART_EXTERN_C
 #endif
 
+// __STDC_FORMAT_MACROS has to be defined before including <inttypes.h> to
+// enable platform independent printf format specifiers.
+#ifndef __STDC_FORMAT_MACROS
+#define __STDC_FORMAT_MACROS
+#endif
+
 #if defined(__CYGWIN__)
 #error Tool chain and platform not supported.
 #elif defined(_WIN32)
 typedef signed __int8 int8_t;
 typedef signed __int16 int16_t;
 typedef signed __int32 int32_t;
 typedef signed __int64 int64_t;
 typedef unsigned __int8 uint8_t;
 typedef unsigned __int16 uint16_t;
 typedef unsigned __int32 uint32_t;
 typedef unsigned __int64 uint64_t;
 #if defined(DART_SHARED_LIB)
 #define DART_EXPORT DART_EXTERN_C __declspec(dllexport)
 #else
 #define DART_EXPORT DART_EXTERN_C
 #endif
 #else
-// __STDC_FORMAT_MACROS has to be defined before including <inttypes.h> to
-// enable platform independent printf format specifiers.
-#ifndef __STDC_FORMAT_MACROS
-#define __STDC_FORMAT_MACROS
-#endif
 #include <inttypes.h>
 #include <stdbool.h>
 #if __GNUC__ >= 4
 #if defined(DART_SHARED_LIB)
 #define DART_EXPORT DART_EXTERN_C __attribute__ ((visibility("default")))
 #else
 #define DART_EXPORT DART_EXTERN_C
 #endif
 #else
 #error Tool chain not supported.
@@ skipping 2555 matching lines @@
 
 typedef void (*Dart_FileWriterFunction)(const char* buffer, int64_t num_bytes);
 
 // Support for generating symbol maps for use by the Linux perf tool.
 DART_EXPORT void Dart_InitPerfEventsSupport(Dart_FileWriterFunction function);
 
 // Support for generating flow graph compiler debugging output into a file.
 DART_EXPORT void Dart_InitFlowGraphPrinting(Dart_FileWriterFunction function);
 
 #endif  // INCLUDE_DART_API_H_