Implement lock file for windows profiles.

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_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 153 matching lines @@
 
 #if defined(OS_WIN)
   // This ugly behemoth handles startup commands sent from another process.
   LRESULT OnCopyData(HWND hwnd, const COPYDATASTRUCT* cds);
 
   bool EscapeVirtualization(const FilePath& user_data_dir);
 
   HWND remote_window_;  // The HWND_MESSAGE of another browser.
   HWND window_;  // The HWND_MESSAGE window.
   bool is_virtualized_;  // Stuck inside Microsoft Softricity VM environment.
+  HANDLE lock_file_;
 #elif defined(OS_LINUX) || defined(OS_OPENBSD)
   // Return true if the given pid is one of our child processes.
   // Assumes that the current pid is the root of all pids of the current
   // instance.
   bool IsSameChromeInstance(pid_t pid);
 
   // Extract the process's pid from a symbol link path and if it is on
   // the same host, kill the process, unlink the lock file and return true.
   // If the process is part of the same chrome instance, unlink the lock file
   // and return true without killing it.
@@ skipping 37 matching lines @@
 #endif
 
   // If messages are received in the locked state, the corresponding command
   // lines are saved here to be replayed later.
   std::vector<DelayedStartupMessage> saved_startup_messages_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessSingleton);
 };
 
 #endif  // CHROME_BROWSER_PROCESS_SINGLETON_H_