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

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

-// Copyright 2013 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_BUFFER_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_LIB_BUFFER_H_
-
-#include <stddef.h>
-
-namespace mojo {
-namespace internal {
-
-// Buffer provides a way to allocate memory. Allocations are 8-byte aligned and
-// zero-initialized. Allocations remain valid for the lifetime of the Buffer.
-class Buffer {
- public:
-  virtual ~Buffer() {}
-  virtual void* Allocate(size_t num_bytes) = 0;
-};
-
-}  // namespace internal
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_BUFFER_H_