Revert "Fix a ton of compiler warnings."

chrome/browser/net/url_fetcher.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.
 //
 // This file contains URLFetcher, a wrapper around URLRequest that handles
 // low-level details like thread safety, ref counting, and incremental buffer
 // reading.  This is useful for callers who simply want to get the data from a
 // URL and don't care about all the nitty-gritty details.
 
 #ifndef CHROME_BROWSER_URL_FETCHER_H_
@@ skipping 57 matching lines @@
     // This will be called when the URL has been fetched, successfully or not.
     // |response_code| is the HTTP response code (200, 404, etc.) if
     // applicable.  |url|, |status| and |data| are all valid until the
     // URLFetcher instance is destroyed.
     virtual void OnURLFetchComplete(const URLFetcher* source,
                                     const GURL& url,
                                     const URLRequestStatus& status,
                                     int response_code,
                                     const ResponseCookies& cookies,
                                     const std::string& data) = 0;
-   protected:
-    ~Delegate() {}
   };
 
   // URLFetcher::Create uses the currently registered Factory to create the
   // URLFetcher. Factory is intended for testing.
   class Factory {
    public:
     virtual URLFetcher* CreateURLFetcher(int id,
                                          const GURL& url,
                                          RequestType request_type,
                                          Delegate* d) = 0;
-   protected:
-    ~Factory() {}
   };
 
   // |url| is the URL to send the request to.
   // |request_type| is the type of request to make.
   // |d| the object that will receive the callback on fetch completion.
   URLFetcher(const GURL& url, RequestType request_type, Delegate* d);
 
   virtual ~URLFetcher();
 
   // Sets the factory used by the static method Create to create a URLFetcher.
@@ skipping 65 matching lines @@
   scoped_refptr<Core> core_;
 
   static Factory* factory_;
 
   base::LeakTracker<URLFetcher> leak_tracker_;
 
   DISALLOW_EVIL_CONSTRUCTORS(URLFetcher);
 };
 
 #endif  // CHROME_BROWSER_URL_FETCHER_H_