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

chrome/browser/browser_process_impl.h

 // 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.
 
 // When each service is created, we set a flag indicating this. At this point,
 // the service initialization could fail or succeed. This allows us to remember
 // if we tried to create a service, and not try creating it over and over if
 // the creation failed.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
 #define CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "base/debug/stack_trace.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "base/timer/timer.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/lifetime/keep_alive_state_observer.h"
 #include "chrome/common/features.h"
 #include "components/prefs/pref_change_registrar.h"
 #include "extensions/features/features.h"
 #include "media/media_features.h"
 #include "ppapi/features/features.h"
 #include "printing/features/features.h"
@@ skipping 26 matching lines @@
 class ChromeNetLog;
 }
 
 namespace policy {
 class BrowserPolicyConnector;
 class PolicyService;
 };
 
 // Real implementation of BrowserProcess that creates and returns the services.
 class BrowserProcessImpl : public BrowserProcess,
-                           public base::NonThreadSafe,
                            public KeepAliveStateObserver {
  public:
   // |local_state_task_runner| must be a shutdown-blocking task runner.
   BrowserProcessImpl(base::SequencedTaskRunner* local_state_task_runner,
                      const base::CommandLine& command_line);
   ~BrowserProcessImpl() override;
 
   // Called before the browser threads are created.
   void PreCreateThreads();
 
@@ skipping 268 matching lines @@
   // Any change to this #ifdef must be reflected as well in
   // chrome/browser/memory/tab_manager_browsertest.cc
   std::unique_ptr<memory::TabManager> tab_manager_;
 #endif
 
   shell_integration::DefaultWebClientState cached_default_web_client_state_;
 
   std::unique_ptr<physical_web::PhysicalWebDataSource>
       physical_web_data_source_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessImpl);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_