Rewrite how RemoteFrameOwners retain life.

third_party/WebKit/public/web/WebFrame.h

 /*
  * Copyright (C) 2009 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 199 matching lines @@
     void clearOpener() { setOpener(0); }
 
     // Inserts the given frame as a child of this frame, so that it is the next
     // child after |previousSibling|, or first child if |previousSibling| is null.
     BLINK_EXPORT void insertAfter(WebFrame* child, WebFrame* previousSibling);
 
     // Adds the given frame as a child of this frame.
     BLINK_EXPORT void appendChild(WebFrame*);
 
     // Removes the given child from this frame.
-    virtual void removeChild(WebFrame*);
+    BLINK_EXPORT void removeChild(WebFrame*);
 
     // Returns the parent frame or 0 if this is a top-most frame.
     BLINK_EXPORT WebFrame* parent() const;
 
     // Returns the top-most frame in the hierarchy containing this frame.
     BLINK_EXPORT WebFrame* top() const;
 
     // Returns the first/last child frame.
     BLINK_EXPORT WebFrame* firstChild() const;
     BLINK_EXPORT WebFrame* lastChild() const;
@@ skipping 381 matching lines @@
     WebFrame* m_firstChild;
     WebFrame* m_lastChild;
 
     WebFrame* m_opener;
     WebPrivateOwnPtr<OpenedFrameTracker> m_openedFrameTracker;
 };
 
 } // namespace blink
 
 #endif