Standardize usage of virtual/override/final in ui/

ui/base/resource/resource_bundle.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 "ui/base/resource/resource_bundle.h"
 
 #include <limits>
 #include <vector>
 
 #include "base/big_endian.h"
@@ skipping 106 matching lines @@
 // ResourceBundle on demand for a given |resource_id|. If the bitmap for the
 // requested scale factor does not exist, it will return the 1x bitmap scaled
 // by the scale factor. This may lead to broken UI if the correct size of the
 // scaled image is not exactly |scale_factor| * the size of the 1x resource.
 // When --highlight-missing-scaled-resources flag is specified, scaled 1x images
 // are higlighted by blending them with red.
 class ResourceBundle::ResourceBundleImageSource : public gfx::ImageSkiaSource {
  public:
   ResourceBundleImageSource(ResourceBundle* rb, int resource_id)
       : rb_(rb), resource_id_(resource_id) {}
-  virtual ~ResourceBundleImageSource() {}
+  ~ResourceBundleImageSource() override {}
 
   // gfx::ImageSkiaSource overrides:
-  virtual gfx::ImageSkiaRep GetImageForScale(float scale) override {
+  gfx::ImageSkiaRep GetImageForScale(float scale) override {
     SkBitmap image;
     bool fell_back_to_1x = false;
     ScaleFactor scale_factor = GetSupportedScaleFactor(scale);
     bool found = rb_->LoadBitmap(resource_id_, &scale_factor,
                                  &image, &fell_back_to_1x);
     if (!found)
       return gfx::ImageSkiaRep();
 
     // If the resource is in the package with SCALE_FACTOR_NONE, it
     // can be used in any scale factor. The image is maked as "unscaled"
@@ skipping 718 matching lines @@
 // static
 bool ResourceBundle::DecodePNG(const unsigned char* buf,
                                size_t size,
                                SkBitmap* bitmap,
                                bool* fell_back_to_1x) {
   *fell_back_to_1x = PNGContainsFallbackMarker(buf, size);
   return gfx::PNGCodec::Decode(buf, size, bitmap);
 }
 
 }  // namespace ui