Move mach_message_util.* to mach_message.*

util/mach/mach_message_util.cc

-// Copyright 2014 The Crashpad Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "util/mach/mach_message_util.h"
-
-namespace crashpad {
-
-void PrepareMIGReplyFromRequest(const mach_msg_header_t* in_header,
-                                mach_msg_header_t* out_header) {
-  out_header->msgh_bits =
-      MACH_MSGH_BITS(MACH_MSGH_BITS_REMOTE(in_header->msgh_bits), 0);
-  out_header->msgh_remote_port = in_header->msgh_remote_port;
-  out_header->msgh_size = sizeof(mig_reply_error_t);
-  out_header->msgh_local_port = MACH_PORT_NULL;
-  out_header->msgh_id = in_header->msgh_id + 100;
-  reinterpret_cast<mig_reply_error_t*>(out_header)->NDR = NDR_record;
-
-  // MIG-generated dispatch routines don’t do this, but they should.
-  out_header->msgh_reserved = 0;
-}
-
-void SetMIGReplyError(mach_msg_header_t* out_header, kern_return_t error) {
-  reinterpret_cast<mig_reply_error_t*>(out_header)->RetCode = error;
-}
-
-const mach_msg_trailer_t* MachMessageTrailerFromHeader(
-    const mach_msg_header_t* header) {
-  vm_address_t header_address = reinterpret_cast<vm_address_t>(header);
-  vm_address_t trailer_address = header_address + round_msg(header->msgh_size);
-  return reinterpret_cast<const mach_msg_trailer_t*>(trailer_address);
-}
-
-}  // namespace crashpad