Move platform_thread to base/threading and put in the base namespace. I left ...

base/process_util_posix.cc

 // Copyright (c) 2010 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 <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <sys/resource.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
 #include <limits>
 #include <set>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/debug/stack_trace.h"
 #include "base/dir_reader_posix.h"
 #include "base/eintr_wrapper.h"
 #include "base/logging.h"
-#include "base/platform_thread.h"
 #include "base/process_util.h"
 #include "base/scoped_ptr.h"
 #include "base/stringprintf.h"
+#include "base/threading/platform_thread.h"
 #include "base/thread_restrictions.h"
 #include "base/time.h"
 #include "base/waitable_event.h"
 
 #if defined(OS_MACOSX)
 #include <crt_externs.h>
 #define environ (*_NSGetEnviron())
 #else
 extern char** environ;
 #endif
@@ skipping 847 matching lines @@
   // TODO(port): use waitpid to avoid leaving zombies around
 
   base::Time end_time = base::Time::Now() +
       base::TimeDelta::FromMilliseconds(wait_milliseconds);
   do {
     NamedProcessIterator iter(executable_name, filter);
     if (!iter.NextProcessEntry()) {
       result = true;
       break;
     }
-    PlatformThread::Sleep(100);
+    base::PlatformThread::Sleep(100);
   } while ((base::Time::Now() - end_time) > base::TimeDelta());
 
   return result;
 }
 
 bool CleanupProcesses(const FilePath::StringType& executable_name,
                       int64 wait_milliseconds,
                       int exit_code,
                       const ProcessFilter* filter) {
   bool exited_cleanly =
       WaitForProcessesToExit(executable_name, wait_milliseconds,
                              filter);
   if (!exited_cleanly)
     KillProcesses(executable_name, exit_code, filter);
   return exited_cleanly;
 }
 
 }  // namespace base