Move mach code shared by Chrome IPC and Mojo to //base/mac.

ipc/attachment_broker_privileged_mac.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 IPC_ATTACHMENT_BROKER_PRIVILEGED_MAC_H_
 #define IPC_ATTACHMENT_BROKER_PRIVILEGED_MAC_H_
 
 #include <mach/mach.h>
 #include <stdint.h>
 
@@ skipping 123 matching lines @@
   };
 
   // IPC message handlers.
   void OnDuplicateMachPort(const Message& message);
 
   // Duplicates the Mach port referenced from |wire_format| from
   // |source_process| into |wire_format|'s destination process.
   MachPortWireFormat DuplicateMachPort(const MachPortWireFormat& wire_format,
                                        base::ProcessId source_process);
 
-  // |task_port| is the task port of another process.
-  // |port_to_insert| must be a send right in the current task's name space.
-  // Creates an intermediate Mach port in |pid| and sends |port_to_insert| as a
-  // mach_msg to the intermediate Mach port.
-  // Returns the intermediate port on success, and MACH_PORT_NULL on failure.
-  // This method takes ownership of |port_to_insert|. On success, ownership is
-  // passed to the intermediate Mach port.
-  mach_port_name_t CreateIntermediateMachPort(
-      mach_port_t task_port,
-      base::mac::ScopedMachSendRight port_to_insert);
-
   // Extracts a copy of the send right to |named_right| from |task_port|.
   // Returns MACH_PORT_NULL on error.
   base::mac::ScopedMachSendRight ExtractNamedRight(
       mach_port_t task_port,
       mach_port_name_t named_right);
 
   // Copies an existing |wire_format|, but substitutes in a different mach port.
   MachPortWireFormat CopyWireFormat(const MachPortWireFormat& wire_format,
                                     uint32_t mach_port);
 
@@ skipping 50 matching lines @@
   // processed.
   std::map<base::ProcessId, ScopedVector<AttachmentExtractor>*> extractors_;
   base::Lock extractors_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(AttachmentBrokerPrivilegedMac);
 };
 
 }  // namespace IPC
 
 #endif  // IPC_ATTACHMENT_BROKER_PRIVILEGED_MAC_H_