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

chrome/browser/process_singleton_startup_lock.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 "chrome/browser/process_singleton_startup_lock.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 
 ProcessSingletonStartupLock::ProcessSingletonStartupLock(
     const ProcessSingleton::NotificationCallback& original_callback)
     : locked_(true),
       original_callback_(original_callback) {}
 
-ProcessSingletonStartupLock::~ProcessSingletonStartupLock() {}
+ProcessSingletonStartupLock::~ProcessSingletonStartupLock() {
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
+}
 
 ProcessSingleton::NotificationCallback
 ProcessSingletonStartupLock::AsNotificationCallback() {
   return base::Bind(&ProcessSingletonStartupLock::NotificationCallbackImpl,
                     base::Unretained(this));
 }
 
 void ProcessSingletonStartupLock::Unlock() {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   locked_ = false;
 
   // Replay the command lines of the messages which were received while the
   // ProcessSingleton was locked. Only replay each message once.
   std::set<DelayedStartupMessage> replayed_messages;
   for (std::vector<DelayedStartupMessage>::const_iterator it =
            saved_startup_messages_.begin();
        it != saved_startup_messages_.end(); ++it) {
     if (replayed_messages.find(*it) != replayed_messages.end())
       continue;
     original_callback_.Run(base::CommandLine(it->first), it->second);
     replayed_messages.insert(*it);
   }
   saved_startup_messages_.clear();
 }
 
 bool ProcessSingletonStartupLock::NotificationCallbackImpl(
     const base::CommandLine& command_line,
     const base::FilePath& current_directory) {
   if (locked_) {
     // If locked, it means we are not ready to process this message because
     // we are probably in a first run critical phase.
     saved_startup_messages_.push_back(
         std::make_pair(command_line.argv(), current_directory));
     return true;
   } else {
     return original_callback_.Run(command_line, current_directory);
   }
 }