Standardize usage of virtual/override/final in components/

components/favicon_base/select_favicon_frames.cc

 // 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.
 
 #include "components/favicon_base/select_favicon_frames.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 #include <map>
@@ skipping 153 matching lines @@
   }
   return skia::ImageOperations::Resize(source_bitmap,
                                        skia::ImageOperations::RESIZE_LANCZOS3,
                                        desired_size_in_pixel,
                                        desired_size_in_pixel);
 }
 
 class FaviconImageSource : public gfx::ImageSkiaSource {
  public:
   FaviconImageSource() {}
-  virtual ~FaviconImageSource() {}
+  ~FaviconImageSource() override {}
 
   // gfx::ImageSkiaSource:
-  virtual gfx::ImageSkiaRep GetImageForScale(float scale) override {
+  gfx::ImageSkiaRep GetImageForScale(float scale) override {
     const gfx::ImageSkiaRep* rep = NULL;
     // gfx::ImageSkia passes one of the resource scale factors. The source
     // should return:
     // 1) The ImageSkiaRep with the highest scale if all available
     // scales are smaller than |scale|.
     // 2) The ImageSkiaRep with the smallest one that is larger than |scale|.
     // Note: Keep this logic consistent with the PNGImageSource in
     // ui/gfx/image.cc.
     // TODO(oshima): consolidate these logic into one place.
     for (std::vector<gfx::ImageSkiaRep>::const_iterator iter =
@@ skipping 83 matching lines @@
     // GetCandidateIndicesWithBestScores() will return duplicate indices if the
     // bitmap data with |frame_pixel_sizes[index]| should be used for multiple
     // scale factors. Remove duplicates here such that |best_indices| contains
     // no duplicates.
     if (already_added.find(index) == already_added.end()) {
       already_added.insert(index);
       best_indices->push_back(index);
     }
   }
 }