Deprecate NonThreadSafe in remoting in favor of SequenceChecker.

remoting/host/setup/win/auth_code_getter.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 "remoting/host/setup/win/auth_code_getter.h"
 
 #include <objbase.h>
 
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "base/win/scoped_bstr.h"
 #include "base/win/scoped_variant.h"
 #include "remoting/base/oauth_helper.h"
 
 namespace {
 const int kUrlPollIntervalMs = 100;
 }  // namespace remoting
 
 namespace remoting {
 
 AuthCodeGetter::AuthCodeGetter() :
     browser_(nullptr),
     timer_interval_(base::TimeDelta::FromMilliseconds(kUrlPollIntervalMs)) {
 }
 
 AuthCodeGetter::~AuthCodeGetter() {
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   KillBrowser();
 }
 
 void AuthCodeGetter::GetAuthCode(
     base::Callback<void(const std::string&)> on_auth_code) {
   if (browser_.Get()) {
     on_auth_code.Run("");
     return;
   }
   on_auth_code_ = on_auth_code;
@@ skipping 51 matching lines @@
 }
 
 void AuthCodeGetter::KillBrowser() {
   if (browser_.Get()) {
     browser_->Quit();
     browser_.Reset();
   }
 }
 
 }  // namespace remoting