Refactor favicon to use C++11 loop and fix style violation

components/favicon/core/favicon_driver.h

 // Copyright 2014 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 COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_H_
 #define COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_H_
 
 class GURL;
 
 namespace gfx {
 class Image;
 }
 
 // Interface that allows Favicon core code to interact with its driver (i.e.,
 // obtain information from it and give information to it). A concrete
 // implementation must be provided by the driver.
 class FaviconDriver {
  public:
-
   // Starts the download for the given favicon. When finished, the driver
   // will call OnDidDownloadFavicon() with the results.
   // Returns the unique id of the download request. The id will be passed
   // in OnDidDownloadFavicon().
   // Bitmaps with pixel sizes larger than |max_bitmap_size| are filtered out
   // from the bitmap results. If there are no bitmap results <=
   // |max_bitmap_size|, the smallest bitmap is resized to |max_bitmap_size| and
   // is the only result. A |max_bitmap_size| of 0 means unlimited.
   virtual int StartDownload(const GURL& url, int max_bitmap_size) = 0;
 
@@ skipping 16 matching lines @@
   // URL otherwise.
   virtual const GURL GetActiveURL() = 0;
 
   // Notifies the driver a favicon image is available. |image| is not
   // necessarily 16x16. |icon_url| is the url the image is from. If
   // |is_active_favicon| is true the image corresponds to the favicon
   // (possibly empty) of the page.
   virtual void OnFaviconAvailable(const gfx::Image& image,
                                   const GURL& icon_url,
                                   bool is_active_favicon) = 0;
+
+ protected:
+  FaviconDriver() {}
+  virtual ~FaviconDriver() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FaviconDriver);
 };
 
 #endif  // COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_H_