Update from https://crrev.com/315085

base/process/process_handle_win.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 <windows.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/windows_version.h"
 
 namespace base {
 
 ProcessId GetCurrentProcId() {
   return ::GetCurrentProcessId();
 }
 
 ProcessHandle GetCurrentProcessHandle() {
   return ::GetCurrentProcess();
 }
 
-bool OpenProcessHandle(ProcessId pid, ProcessHandle* handle) {
-  // We try to limit privileges granted to the handle. If you need this
-  // for test code, consider using OpenPrivilegedProcessHandle instead of
-  // adding more privileges here.
-  ProcessHandle result = OpenProcess(PROCESS_TERMINATE |
-                                     PROCESS_QUERY_INFORMATION |
-                                     SYNCHRONIZE,
-                                     FALSE, pid);
-
-  if (result == NULL)
-    return false;
-
-  *handle = result;
-  return true;
-}
-
 void CloseProcessHandle(ProcessHandle process) {
   CloseHandle(process);
 }
 
 ProcessId GetProcId(ProcessHandle process) {
   // This returns 0 if we have insufficient rights to query the process handle.
   return GetProcessId(process);
 }
 
 bool GetProcessIntegrityLevel(ProcessHandle process, IntegrityLevel *level) {
@@ skipping 41 matching lines @@
     *level = HIGH_INTEGRITY;
   } else {
     NOTREACHED();
     return false;
   }
 
   return true;
 }
 
 }  // namespace base