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

base/process/process_iterator.h

 // Copyright (c) 2013 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.
 
 // This file contains methods to iterate over processes on the system.
 
 #ifndef BASE_PROCESS_PROCESS_ITERATOR_H_
 #define BASE_PROCESS_PROCESS_ITERATOR_H_
 
 #include <list>
 #include <string>
 #include <vector>
 
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/process/process.h"
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <tlhelp32.h>
-#elif defined(OS_MACOSX) || defined(OS_BSD)
+#elif defined(OS_MACOSX) || defined(OS_OPENBSD)
 #include <sys/sysctl.h>
+#elif defined(OS_FREEBSD)
+#include <sys/user.h>
 #elif defined(OS_POSIX)
 #include <dirent.h>
 #endif
 
 namespace base {
 
 #if defined(OS_WIN)
 struct ProcessEntry : public PROCESSENTRY32 {
   ProcessId pid() const { return th32ProcessID; }
   ProcessId parent_pid() const { return th32ParentProcessID; }
@@ skipping 139 matching lines @@
 
 // Returns the number of processes on the machine that are running from the
 // given executable name.  If filter is non-null, then only processes selected
 // by the filter will be counted.
 BASE_EXPORT int GetProcessCount(const FilePath::StringType& executable_name,
                                 const ProcessFilter* filter);
 
 }  // namespace base
 
 #endif  // BASE_PROCESS_PROCESS_ITERATOR_H_