Move base/thread.h to base/threading, fix up callers to use the new location....

base/threading/platform_thread_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 "base/threading/platform_thread.h"
 
 #include <errno.h>
 #include <sched.h>
 
 #include "base/logging.h"
 #include "base/safe_strerror_posix.h"
 #include "base/scoped_ptr.h"
-#include "base/thread_restrictions.h"
+#include "base/threading/thread_restrictions.h"
 
 #if defined(OS_MACOSX)
 #include <mach/mach.h>
 #include <sys/resource.h>
 #include <algorithm>
 #endif
 
 #if defined(OS_LINUX)
 #include <dlfcn.h>
 #include <sys/prctl.h>
@@ skipping 192 matching lines @@
 // static
 void PlatformThread::Join(PlatformThreadHandle thread_handle) {
   // Joining another thread may block the current thread for a long time, since
   // the thread referred to by |thread_handle| may still be running long-lived /
   // blocking tasks.
   base::ThreadRestrictions::AssertIOAllowed();
   pthread_join(thread_handle, NULL);
 }
 
 }  // namespace base