Revert "Fix a ton of compiler warnings."

chrome/browser/possible_url_model.h

 // Copyright (c) 2009 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 CHROME_BROWSER_POSSIBLE_URL_MODEL_H_
 #define CHROME_BROWSER_POSSIBLE_URL_MODEL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 60 matching lines @@
     std::wstring title;
   };
 
   // The current profile.
   Profile* profile_;
 
   // Our observer.
   TableModelObserver* observer_;
 
   // Our consumer for favicon requests.
-  CancelableRequestConsumerT<size_t, 0> consumer_;
+  CancelableRequestConsumerT<size_t, NULL> consumer_;
 
   // The results we're showing.
   std::vector<Result> results_;
 
   // Map Result::index -> Favicon.
   typedef std::map<size_t, SkBitmap> FavIconMap;
   FavIconMap fav_icon_map_;
 
   DISALLOW_EVIL_CONSTRUCTORS(PossibleURLModel);
 };
 
 #endif  // CHROME_BROWSER_POSSIBLE_URL_MODEL_H_