Don't depend on libdart_io in run_vm_tests and gen_snapshot.

runtime/bin/builtin_no_io.cc

Index: runtime/bin/builtin_no_io.cc
diff --git a/runtime/bin/io_natives.h b/runtime/bin/builtin_no_io.cc
similarity index 58%
copy from runtime/bin/io_natives.h
copy to runtime/bin/builtin_no_io.cc
index 7039234afc63b0fdc83c8b3e91607cac0e54a4af..883ad50214a7ee697ec50991b0b82850cf0d03a9 100644
--- a/runtime/bin/io_natives.h
+++ b/runtime/bin/builtin_no_io.cc
@@ -1,11 +1,9 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file

[Ivan Posva, 2014/02/25 07:53:12]

Do not change the copyright notices please. Especially not to the wrong year!

[Anders Johnsen, 2014/02/25 08:31:32]

Yeah, wrong year was an oops. However, I was under the impression that we would
update the year when we changes files.

But, file is gone now.

 // 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_IO_NATIVES_H_
-#define BIN_IO_NATIVES_H_
-
-#include "include/dart_api.h"
+#include "bin/io_natives.h"
+#include "platform/globals.h"
 
 
 namespace dart {
@@ -13,9 +11,9 @@ namespace bin {
 
 Dart_NativeFunction IONativeLookup(Dart_Handle name,
                                    int argument_count,
-                                   bool* auto_setup_scope);
+                                   bool* auto_setup_scope) {
+  return NULL;
+}
 
 }  // namespace bin
 }  // namespace dart
-
-#endif  // BIN_IO_NATIVES_H_