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

mojo/public/cpp/bindings/lib/control_message_handler.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_CONTROL_MESSAGE_HANDLER_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_LIB_CONTROL_MESSAGE_HANDLER_H_
-
-#include <stdint.h>
-
-#include "mojo/public/cpp/bindings/message.h"
-#include "mojo/public/cpp/system/macros.h"
-
-namespace mojo {
-namespace internal {
-
-// Handlers for request messages defined in interface_control_messages.mojom.
-class ControlMessageHandler : public MessageReceiverWithResponderStatus {
- public:
-  static bool IsControlMessage(const Message* message);
-
-  explicit ControlMessageHandler(uint32_t interface_version);
-  ~ControlMessageHandler() override;
-
-  // Call the following methods only if IsControlMessage() returned true.
-  bool Accept(Message* message) override;
-  // Takes ownership of |responder|.
-  bool AcceptWithResponder(Message* message,
-                           MessageReceiverWithStatus* responder) override;
-
- private:
-  bool Run(Message* message, MessageReceiverWithStatus* responder);
-  bool RunOrClosePipe(Message* message);
-
-  uint32_t interface_version_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(ControlMessageHandler);
-};
-
-}  // namespace internal
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_CONTROL_MESSAGE_HANDLER_H_