Standardize usage of virtual/override/final in chrome/browser/

chrome/browser/themes/browser_theme_pack.cc

 // Copyright (c) 2012 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 "chrome/browser/themes/browser_theme_pack.h"
 
 #include <limits>
 
 #include "base/files/file.h"
 #include "base/memory/ref_counted_memory.h"
@@ skipping 475 matching lines @@
   canvas.drawBitmapRect(source_bitmap, NULL, scaled_bounds);
   return scaled_bitmap;
 }
 
 // A ImageSkiaSource that scales 100P image to the target scale factor
 // if the ImageSkiaRep for the target scale factor isn't available.
 class ThemeImageSource: public gfx::ImageSkiaSource {
  public:
   explicit ThemeImageSource(const gfx::ImageSkia& source) : source_(source) {
   }
-  virtual ~ThemeImageSource() {}
+  ~ThemeImageSource() override {}
 
-  virtual gfx::ImageSkiaRep GetImageForScale(float scale) override {
+  gfx::ImageSkiaRep GetImageForScale(float scale) override {
     if (source_.HasRepresentation(scale))
       return source_.GetRepresentation(scale);
     const gfx::ImageSkiaRep& rep_100p = source_.GetRepresentation(1.0f);
     SkBitmap scaled_bitmap = CreateLowQualityResizedBitmap(
         rep_100p.sk_bitmap(),
         ui::SCALE_FACTOR_100P,
         ui::GetSupportedScaleFactor(scale));
     return gfx::ImageSkiaRep(scaled_bitmap, scale);
   }
 
  private:
   const gfx::ImageSkia source_;
 
   DISALLOW_COPY_AND_ASSIGN(ThemeImageSource);
 };
 
 // An ImageSkiaSource that delays decoding PNG data into bitmaps until
 // needed. Missing data for a scale factor is computed by scaling data for an
 // available scale factor. Computed bitmaps are stored for future look up.
 class ThemeImagePngSource : public gfx::ImageSkiaSource {
  public:
   typedef std::map<ui::ScaleFactor,
                    scoped_refptr<base::RefCountedMemory> > PngMap;
 
   explicit ThemeImagePngSource(const PngMap& png_map) : png_map_(png_map) {}
 
-  virtual ~ThemeImagePngSource() {}
+  ~ThemeImagePngSource() override {}
 
  private:
-  virtual gfx::ImageSkiaRep GetImageForScale(float scale) override {
+  gfx::ImageSkiaRep GetImageForScale(float scale) override {
     ui::ScaleFactor scale_factor = ui::GetSupportedScaleFactor(scale);
     // Look up the bitmap for |scale factor| in the bitmap map. If found
     // return it.
     BitmapMap::const_iterator exact_bitmap_it = bitmap_map_.find(scale_factor);
     if (exact_bitmap_it != bitmap_map_.end())
       return gfx::ImageSkiaRep(exact_bitmap_it->second, scale);
 
     // Look up the raw PNG data for |scale_factor| in the png map. If found,
     // decode it, store the result in the bitmap map and return it.
     PngMap::const_iterator exact_png_it = png_map_.find(scale_factor);
@@ skipping 65 matching lines @@
                            const gfx::ImageSkia& overlay,
                            const color_utils::HSL& hsl_shift,
                            int vertical_offset)
       : gfx::CanvasImageSource(image_to_tint.size(), false),
         image_to_tint_(image_to_tint),
         overlay_(overlay),
         hsl_shift_(hsl_shift),
         vertical_offset_(vertical_offset) {
   }
 
-  virtual ~TabBackgroundImageSource() {
-  }
+  ~TabBackgroundImageSource() override {}
 
   // Overridden from CanvasImageSource:
-  virtual void Draw(gfx::Canvas* canvas) override {
+  void Draw(gfx::Canvas* canvas) override {
     gfx::ImageSkia bg_tint =
         gfx::ImageSkiaOperations::CreateHSLShiftedImage(image_to_tint_,
             hsl_shift_);
     canvas->TileImageInt(bg_tint, 0, vertical_offset_, 0, 0,
         size().width(), size().height());
 
     // If they've provided a custom image, overlay it.
     if (!overlay_.isNull()) {
       canvas->TileImageInt(overlay_, 0, 0, size().width(),
                            overlay_.height());
@@ skipping 1001 matching lines @@
                                            false,
                                            &bitmap_data)) {
       NOTREACHED() << "Unable to encode theme image for prs_id="
                    << prs_id << " for scale_factor=" << scale_factors_[i];
       break;
     }
     image_memory_[scaled_raw_id] =
         base::RefCountedBytes::TakeVector(&bitmap_data);
   }
 }