Move mach_message_util.* to mach_message.*

util/mach/mach_message.h

 // 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.
 
-#ifndef CRASHPAD_UTIL_MACH_MACH_MESSAGE_UTIL_H_
-#define CRASHPAD_UTIL_MACH_MACH_MESSAGE_UTIL_H_
+#ifndef CRASHPAD_UTIL_MACH_MACH_MESSAGE_H_
+#define CRASHPAD_UTIL_MACH_MACH_MESSAGE_H_
 
 #include <mach/mach.h>
 
 namespace crashpad {
 
 //! \brief Initializes a reply message for a MIG server routine based on its
 //!     corresponding request.
 //!
 //! If a request is handled by a server routine, it may be necessary to revise
 //! some of the fields set by this function, such as `msgh_size` and any fields
@@ skipping 30 matching lines @@
 //! \param[in] header A pointer to a received Mach message.
 //!
 //! \return A pointer to the trailer following the received Mach message’s body.
 //!     The contents of the trailer depend on the options provided to
 //!     `mach_msg()` or a similar function when the message was received.
 const mach_msg_trailer_t* MachMessageTrailerFromHeader(
     const mach_msg_header_t* header);
 
 }  // namespace crashpad
 
-#endif  // CRASHPAD_UTIL_MACH_MACH_MESSAGE_UTIL_H_
+#endif  // CRASHPAD_UTIL_MACH_MACH_MESSAGE_H_