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

content/common/set_process_title.cc

 // 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.
 
 #include "content/common/set_process_title.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/string_util.h"
 #include "build/build_config.h"
 
 #if defined(OS_POSIX)
 #include <limits.h>
 #include <stdlib.h>
 #include <unistd.h>
 #endif
 
 #if defined(OS_LINUX)
 #include <sys/prctl.h>
 
 // Linux/glibc doesn't natively have setproctitle().
 #include "content/common/set_process_title_linux.h"
 #endif
 
-#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_SOLARIS)
+#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_SOLARIS) && \
+    defined(OS_OPENBSD)
 
 void SetProcessTitleFromCommandLine(const char** main_argv) {
   // Build a single string which consists of all the arguments separated
   // by spaces. We can't actually keep them separate due to the way the
   // setproctitle() function works.
   std::string title;
   bool have_argv0 = false;
 
 #if defined(OS_LINUX)
   if (main_argv)
@@ skipping 35 matching lines @@
 
 #else
 
 // All other systems (basically Windows & Mac) have no need or way to implement
 // this function.
 void SetProcessTitleFromCommandLine(const char** /* main_argv */) {
 }
 
 #endif