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

mojo/public/cpp/bindings/message_validator.h

-// Copyright 2016 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_MESSAGE_VALIDATOR_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_MESSAGE_VALIDATOR_H_
-
-#include <string>
-#include <vector>
-
-#include "mojo/public/cpp/bindings/lib/validation_errors.h"
-#include "mojo/public/cpp/bindings/message.h"
-#include "mojo/public/cpp/system/macros.h"
-
-namespace mojo {
-namespace internal {
-
-// This class is the base class for message validators. Subclasses should
-// implement the pure virtual method Validate() to validate messages.
-class MessageValidator {
- public:
-  virtual ~MessageValidator() {}
-  // Validates the message and returns ValidationError::NONE if valid.
-  // Otherwise returns a different value, and sets the |err| string if it is not
-  // null.
-  virtual ValidationError Validate(const Message* message,
-                                   std::string* err) = 0;
-};
-
-// A message validator that does nothing, and always returns a non-error.
-class PassThroughValidator final : public MessageValidator {
- public:
-  ValidationError Validate(const Message* message, std::string* err) override;
-};
-
-using MessageValidatorList = std::vector<std::unique_ptr<MessageValidator>>;
-
-// Iterates through |validators| and tries to validate the given |message| until
-// a validator fails.  If a validator fails, a |ValidationError| is returned and
-// the supplied |err| is set if it is not null.  |ValidationError::NONE| is
-// returned if the supplied |message| passes all the |validators|.
-ValidationError RunValidatorsOnMessage(const MessageValidatorList& validators,
-                                       const Message* message,
-                                       std::string* err);
-
-}  // namespace internal
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_MESSAGE_VALIDATOR_H_