Replace deprecated base::NonThreadSafe in chrome in favor of SequenceChecker.

chrome/browser/process_singleton_win.cc

 // 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 "chrome/browser/process_singleton.h"
 
 #include <windows.h>
 #include <shellapi.h>
 #include <stddef.h>
 
@@ skipping 251 matching lines @@
     const NotificationCallback& notification_callback)
     : notification_callback_(notification_callback),
       is_virtualized_(false),
       lock_file_(INVALID_HANDLE_VALUE),
       user_data_dir_(user_data_dir),
       should_kill_remote_process_callback_(
           base::Bind(&DisplayShouldKillMessageBox)) {
 }
 
 ProcessSingleton::~ProcessSingleton() {
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   if (lock_file_ != INVALID_HANDLE_VALUE)
     ::CloseHandle(lock_file_);
 }
 
 // Code roughly based on Mozilla.
 ProcessSingleton::NotifyResult ProcessSingleton::NotifyOtherProcess() {
   if (is_virtualized_)
     return PROCESS_NOTIFIED;  // We already spawned the process in this case.
   if (lock_file_ == INVALID_HANDLE_VALUE && !remote_window_) {
     return LOCK_ERROR;
@@ skipping 140 matching lines @@
   return window_.hwnd() != NULL;
 }
 
 void ProcessSingleton::Cleanup() {
 }
 
 void ProcessSingleton::OverrideShouldKillRemoteProcessCallbackForTesting(
     const ShouldKillRemoteProcessCallback& display_dialog_callback) {
   should_kill_remote_process_callback_ = display_dialog_callback;
 }