Update from https://crrev.com/312398

base/process/process_handle_posix.cc

 // Copyright (c) 2013 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/process_handle.h"
 
 #include <unistd.h>
 
 namespace base {
 
 ProcessId GetCurrentProcId() {
   return getpid();
 }
 
 ProcessHandle GetCurrentProcessHandle() {
   return GetCurrentProcId();
 }
 
 bool OpenProcessHandle(ProcessId pid, ProcessHandle* handle) {
   // On Posix platforms, process handles are the same as PIDs, so we
   // don't need to do anything.
   *handle = pid;
   return true;
 }
 
-bool OpenPrivilegedProcessHandle(ProcessId pid, ProcessHandle* handle) {
-  // On POSIX permissions are checked for each operation on process,
-  // not when opening a "handle".
-  return OpenProcessHandle(pid, handle);
-}
-
 bool OpenProcessHandleWithAccess(ProcessId pid,
                                  uint32 access_flags,
                                  ProcessHandle* handle) {
   // On POSIX permissions are checked for each operation on process,
   // not when opening a "handle".
   return OpenProcessHandle(pid, handle);
 }
 
 void CloseProcessHandle(ProcessHandle process) {
   // See OpenProcessHandle, nothing to do.
   return;
 }
 
 ProcessId GetProcId(ProcessHandle process) {
   return process;
 }
 
 }  // namespace base