Revert "Fix a ton of compiler warnings."

chrome/browser/icon_loader.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_ICON_LOADER_H_
 #define CHROME_BROWSER_ICON_LOADER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 25 matching lines @@
     NORMAL,     // 32x32
     LARGE
   };
 
   class Delegate {
    public:
     // Invoked when an icon has been read. |source| is the IconLoader. If the
     // icon has been successfully loaded, result is non-null. This method must
     // return true if it is taking ownership of the returned bitmap.
     virtual bool OnBitmapLoaded(IconLoader* source, SkBitmap* result) = 0;
-   protected:
-    ~Delegate() {}
   };
 
   IconLoader(const IconGroupID& group, IconSize size, Delegate* delegate);
 
   virtual ~IconLoader();
 
   // Start reading the icon on the file thread.
   void Start();
 
  private:
@@ skipping 18 matching lines @@
   // on the main thread.
   void ParseIcon();
   FilePath filename_;
   std::string icon_data_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(IconLoader);
 };
 
 #endif  // CHROME_BROWSER_ICON_LOADER_H_