Revert "Fix a ton of compiler warnings."

chrome/browser/tab_contents/page_navigator.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 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.
 
 // PageNavigator defines an interface that can be used to express the user's
 // intention to navigate to a particular URL.  The implementing class should
 // perform the navigation.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_PAGE_NAVIGATOR_H_
 #define CHROME_BROWSER_TAB_CONTENTS_PAGE_NAVIGATOR_H_
 
 #include "chrome/common/page_transition_types.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class GURL;
 
 class PageNavigator {
  public:
   // Opens a URL with the given disposition.  The transition specifies how this
   // navigation should be recorded in the history system (for example, typed).
   virtual void OpenURL(const GURL& url, const GURL& referrer,
                        WindowOpenDisposition disposition,
                        PageTransition::Type transition) = 0;
- protected:
-  ~PageNavigator() {}
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_PAGE_NAVIGATOR_H_