[Not for review] scoped_refptr move benchmark.

base/memory/ref_counted.h

 // Copyright (c) 2012 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_MEMORY_REF_COUNTED_H_
 #define BASE_MEMORY_REF_COUNTED_H_
 
 #include <cassert>
 #include <iosfwd>
 
@@ skipping 419 matching lines @@
 template <typename T, typename U>
 bool operator!=(const T* lhs, const scoped_refptr<U>& rhs) {
   return !operator==(lhs, rhs);
 }
 
 template <typename T>
 std::ostream& operator<<(std::ostream& out, const scoped_refptr<T>& p) {
   return out << p.get();
 }
 
+class ThreadUnsafe : public base::RefCounted<ThreadUnsafe> {
+ private:
+  friend class base::RefCounted<ThreadUnsafe>;
+};
+class ThreadSafe : public base::RefCountedThreadSafe<ThreadSafe> {
+ private:
+   friend class base::RefCountedThreadSafe<ThreadSafe>;
+};
+
+scoped_refptr<ThreadUnsafe> get_thread_unsafe();
+scoped_refptr<ThreadSafe> get_thread_safe();
+
 #endif  // BASE_MEMORY_REF_COUNTED_H_