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

chrome/browser/process_singleton.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.
 
 #ifndef CHROME_BROWSER_PROCESS_SINGLETON_H_
 #define CHROME_BROWSER_PROCESS_SINGLETON_H_
 
+#include "base/sequence_checker.h"
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif  // defined(OS_WIN)
 
 #include <set>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/process/process.h"
-#include "base/threading/non_thread_safe.h"
 #include "ui/gfx/native_widget_types.h"
 
 #if defined(OS_POSIX) && !defined(OS_ANDROID)
 #include "base/files/scoped_temp_dir.h"
 #endif
 
 #if defined(OS_WIN)
 #include "base/win/message_window.h"
 #endif  // defined(OS_WIN)
 
 namespace base {
 class CommandLine;
 }
 
 // ProcessSingleton ----------------------------------------------------------
 //
 // This class allows different browser processes to communicate with
 // each other.  It is named according to the user data directory, so
 // we can be sure that no more than one copy of the application can be
 // running at once with a given data directory.
 //
 // Implementation notes:
 // - the Windows implementation uses an invisible global message window;
 // - the Linux implementation uses a Unix domain socket in the user data dir.
 
-class ProcessSingleton : public base::NonThreadSafe {
+class ProcessSingleton {
  public:
   // Used to send the reason of remote hang process termination as histogram.
   enum RemoteHungProcessTerminateReason {
 #if defined(OS_WIN)
     USER_ACCEPTED_TERMINATION = 1,
     NO_VISIBLE_WINDOW_FOUND = 2,
 #elif defined(OS_POSIX)
     NOTIFY_ATTEMPTS_EXCEEDED = 3,
     SOCKET_WRITE_FAILED = 4,
     SOCKET_READ_FAILED = 5,
@@ skipping 150 matching lines @@
 
   // Temporary directory to hold the socket.
   base::ScopedTempDir socket_dir_;
 
   // Helper class for linux specific messages.  LinuxWatcher is ref counted
   // because it posts messages between threads.
   class LinuxWatcher;
   scoped_refptr<LinuxWatcher> watcher_;
 #endif
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(ProcessSingleton);
 };
 
 #endif  // CHROME_BROWSER_PROCESS_SINGLETON_H_