Make the fuchsia mojo/public repo the source of truth.

mojo/public/platform/dart/mojo_natives.h

Index: mojo/public/platform/dart/mojo_natives.h
diff --git a/mojo/public/platform/dart/mojo_natives.h b/mojo/public/platform/dart/mojo_natives.h
deleted file mode 100644
index 596c140fc21d22d3b5d846dbf55576df761edcfa..0000000000000000000000000000000000000000
--- a/mojo/public/platform/dart/mojo_natives.h
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef MOJO_PUBLIC_PLATFORM_DART_MOJO_NATIVES_H_
-#define MOJO_PUBLIC_PLATFORM_DART_MOJO_NATIVES_H_
-
-#include "dart/runtime/include/dart_api.h"
-
-namespace mojo {
-namespace dart {
-
-Dart_NativeFunction MojoNativeLookup(Dart_Handle name,
-                                     int argument_count,
-                                     bool* auto_setup_scope);
-
-const uint8_t* MojoNativeSymbol(Dart_NativeFunction nf);
-
-}  // namespace dart
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_PLATFORM_DART_MOJO_NATIVES_H_