Remove yet another obsolete MSVC workaround.

third_party/WebKit/Source/wtf/LinkedStack.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 49 matching lines @@
 
 private:
     class Node {
         USING_FAST_MALLOC(LinkedStack::Node);
     public:
         Node(const T&, PassOwnPtr<Node> next);
 
         T m_data;
         OwnPtr<Node> m_next;
     };
-#if COMPILER(MSVC)
-    friend struct ::WTF::OwnedPtrDeleter<Node>;
-#endif
 
     OwnPtr<Node> m_head;
     size_t m_size;
 };
 
 template <typename T>
 LinkedStack<T>::Node::Node(const T& data, PassOwnPtr<Node> next)
     : m_data(data)
     , m_next(next)
 {
@@ skipping 30 matching lines @@
 inline size_t LinkedStack<T>::size()
 {
     return m_size;
 }
 
 } // namespace WTF
 
 using WTF::LinkedStack;
 
 #endif