Revert "Fix a ton of compiler warnings."

chrome/browser/bookmarks/bookmark_service.h

-// Copyright 2009, The Chromium Authors
+// Copyright 2008, 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
 // copyright notice, this list of conditions and the following disclaimer
@@ skipping 37 matching lines @@
   // Returns, by reference in urls, the set of bookmarked urls. This returns
   // the unique set of URLs. For example, if two bookmarks reference the same
   // URL only one entry is added.
   //
   // If not on the main thread you *must* invoke BlockTillLoaded first.
   virtual void GetBookmarks(std::vector<GURL>* urls) = 0;
 
   // Blocks until loaded. This is intended for usage on a thread other than
   // the main thread.
   virtual void BlockTillLoaded() = 0;
-
- protected:
-  ~BookmarkService() {}
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_SERVICE_H_