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

mojo/public/cpp/bindings/lib/validation_util.h

-// Copyright 2015 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_CPP_BINDINGS_LIB_VALIDATION_UTIL_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_LIB_VALIDATION_UTIL_H_
-
-#include <stdint.h>
-
-#include <string>
-
-#include "mojo/public/cpp/bindings/lib/bounds_checker.h"
-#include "mojo/public/cpp/bindings/lib/validation_errors.h"
-
-namespace mojo {
-namespace internal {
-
-// Checks whether decoding the pointer will overflow and produce a pointer
-// smaller than |offset|.
-bool ValidateEncodedPointer(const uint64_t* offset);
-
-// Validates that |data| contains a valid struct header, in terms of alignment
-// and size (i.e., the |num_bytes| field of the header is sufficient for storing
-// the header itself). Besides, it checks that the memory range
-// [data, data + num_bytes) is not marked as occupied by other objects in
-// |bounds_checker|. On success, the memory range is marked as occupied.
-// Note: Does not verify |version| or that |num_bytes| is correct for the
-// claimed version.
-ValidationError ValidateStructHeaderAndClaimMemory(
-    const void* data,
-    BoundsChecker* bounds_checker,
-    std::string* err);
-
-}  // namespace internal
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_VALIDATION_UTIL_H_