Add support for FreeBSD in base/ , base/process/ , and base/threading so that the bootstrap binary …

base/threading/platform_thread_freebsd.cc

Index: base/threading/platform_thread_freebsd.cc
diff --git a/base/threading/platform_thread_linux.cc b/base/threading/platform_thread_freebsd.cc
similarity index 75%
copy from base/threading/platform_thread_linux.cc
copy to base/threading/platform_thread_freebsd.cc
index 0c0ebcb538d137da970f5fd52cd4fe1fa4167552..4be728203095a88c6456aea132aa269ba48be6bd 100644
--- a/base/threading/platform_thread_linux.cc
+++ b/base/threading/platform_thread_freebsd.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 2014 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.
 
@@ -16,10 +16,10 @@
 #include "base/tracked_objects.h"
 
 #if !defined(OS_NACL)
-#include <sys/prctl.h>
 #include <sys/resource.h>
 #include <sys/syscall.h>
 #include <sys/time.h>
+#include <sys/types.h>
 #include <unistd.h>
 #endif
 
@@ -49,22 +49,13 @@ void PlatformThread::SetName(const char* name) {
   tracked_objects::ThreadData::InitializeThreadContext(name);
 
 #if !defined(OS_NACL)
-  // On linux we can get the thread names to show up in the debugger by setting
-  // the process name for the LWP.  We don't want to do this for the main
-  // thread because that would rename the process, causing tools like killall
-  // to stop working.
+  // On FreeBSD we can get the thread names to show up in the debugger by
+  // setting the process name for the LWP.  We don't want to do this for the
+  // main thread because that would rename the process, causing tools like
+  // killall to stop working.
   if (PlatformThread::CurrentId() == getpid())
     return;
-
-  // http://0pointer.de/blog/projects/name-your-threads.html
-  // Set the name for the LWP (which gets truncated to 15 characters).
-  // Note that glibc also has a 'pthread_setname_np' api, but it may not be
-  // available everywhere and it's only benefit over using prctl directly is
-  // that it can set the name of threads other than the current thread.
-  int err = prctl(PR_SET_NAME, name);
-  // We expect EPERM failures in sandboxed processes, just ignore those.
-  if (err < 0 && errno != EPERM)
-    DPLOG(ERROR) << "prctl(PR_SET_NAME)";
+  setproctitle("%s", name);
 #endif  //  !defined(OS_NACL)
 }