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

base/ref_counted.h

 // 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.
 
 #ifndef BASE_REF_COUNTED_H_
 #define BASE_REF_COUNTED_H_
 #pragma once
 
 #include "base/atomic_ref_count.h"
-#include "base/thread_collision_warner.h"
+#include "base/threading/thread_collision_warner.h"
 
 namespace base {
 
 namespace subtle {
 
 class RefCountedBase {
  public:
   static bool ImplementsThreadSafeReferenceCounting() { return false; }
 
   bool HasOneRef() const { return ref_count_ == 1; }
@@ skipping 268 matching lines @@
 };
 
 // Handy utility for creating a scoped_refptr<T> out of a T* explicitly without
 // having to retype all the template arguments
 template <typename T>
 scoped_refptr<T> make_scoped_refptr(T* t) {
   return scoped_refptr<T>(t);
 }
 
 #endif  // BASE_REF_COUNTED_H_