Split ProcessHandle and its related routines into base/process/process_handle.h.

base/process_util_mac.mm

 // Copyright (c) 2012 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.
 
 #include "base/process_util.h"
 
 #import <Cocoa/Cocoa.h>
 #include <crt_externs.h>
 #include <errno.h>
 #include <mach/mach.h>
@@ skipping 39 matching lines @@
                                           EXC_MASK_BREAKPOINT;
 
   // Setting the exception port to MACH_PORT_NULL may not be entirely
   // kosher to restore the default exception handler, but in practice,
   // it results in the exception port being set to Apple Crash Reporter,
   // the desired behavior.
   task_set_exception_ports(mach_task_self(), exception_mask, MACH_PORT_NULL,
                            EXCEPTION_DEFAULT, THREAD_STATE_NONE);
 }
 
-ProcessId GetParentProcessId(ProcessHandle process) {
-  struct kinfo_proc info;
-  size_t length = sizeof(struct kinfo_proc);
-  int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process };
-  if (sysctl(mib, 4, &info, &length, NULL, 0) < 0) {
-    DPLOG(ERROR) << "sysctl";
-    return -1;
-  }
-  if (length == 0)
-    return -1;
-  return info.kp_eproc.e_ppid;
-}
-
 }  // namespace base