Split dart_api.h into multiple parts:

runtime/bin/native_service.h

 // 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.
 
 #ifndef BIN_NATIVE_SERVICE_H_
 #define BIN_NATIVE_SERVICE_H_
 
 #include "include/dart_api.h"
+#include "include/dart_native_api.h"
 #include "platform/globals.h"
 #include "platform/thread.h"
 
 
 namespace dart {
 namespace bin {
 
 // Utility class to set up a native service and allocate Dart native
 // ports to interact with it from Dart code. The number of native ports
 // allocated for each service is limited.
@@ skipping 24 matching lines @@
   Dart_Port* service_ports_;
   int service_ports_index_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(NativeService);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_NATIVE_SERVICE_H_