share all the needed linux code with OpenBSD in chrome and content

chrome/browser/process_singleton.h

 // Copyright (c) 2011 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 49 matching lines @@
   // TODO(brettw): this will not handle all cases. If two process start up too
   // close to each other, the Create() might not yet have happened for the
   // first one, so this function won't find it.
   NotifyResult NotifyOtherProcess();
 
   // Notify another process, if available.  Otherwise sets ourselves as the
   // singleton instance.  Returns PROCESS_NONE if we became the singleton
   // instance.
   NotifyResult NotifyOtherProcessOrCreate();
 
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
   // Exposed for testing.  We use a timeout on Linux, and in tests we want
   // this timeout to be short.
   NotifyResult NotifyOtherProcessWithTimeout(const CommandLine& command_line,
                                              int timeout_seconds,
                                              bool kill_unresponsive);
   NotifyResult NotifyOtherProcessWithTimeoutOrCreate(
       const CommandLine& command_line,
       int timeout_seconds);
-#endif  // defined(OS_LINUX)
+#endif  // defined(OS_LINUX) || defined(OS_OPENBSD)
 
 #if defined(OS_WIN) && !defined(USE_AURA)
   // Used in specific cases to let us know that there is an existing instance
   // of Chrome running with this profile. In general, you should not use this
   // function. Instead consider using NotifyOtherProcessOrCreate().
   // For non profile-specific method, use
   // browser_util::IsBrowserAlreadyRunning().
   bool FoundOtherProcessWindow() const {
       return (NULL != remote_window_);
   }
@@ skipping 85 matching lines @@
   // File descriptor associated with the lockfile, valid between
   // |Create()| and |Cleanup()|.  Two instances cannot have a lock on
   // the same file at the same time.
   int lock_fd_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ProcessSingleton);
 };
 
 #endif  // CHROME_BROWSER_PROCESS_SINGLETON_H_