C++11 override style change for athena

athena/content/content_proxy.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 "athena/content/content_proxy.h"
 
 #include "base/bind.h"
 #include "base/threading/worker_pool.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view.h"
@@ skipping 24 matching lines @@
       // When coming here, the resulting image will be empty.
       DCHECK(false) << "Cannot start bitmap encode task.";
       callback.Run();
     }
   }
 
   scoped_refptr<base::RefCountedBytes> data() const { return data_; }
 
  private:
   friend class base::RefCountedThreadSafe<ProxyImageData>;
-  virtual ~ProxyImageData() {
-  }
+  ~ProxyImageData() {}
 
   void EncodeOnWorker(const SkBitmap& bitmap) {
     DCHECK_EQ(bitmap.colorType(), kAlpha_8_SkColorType);
     // Encode the A8 bitmap to grayscale PNG treating alpha as color intensity.
     std::vector<unsigned char> data;
     if (gfx::PNGCodec::EncodeA8SkBitmap(bitmap, &data))
       data_ = new base::RefCountedBytes(data);
   }
 
   scoped_refptr<base::RefCountedBytes> data_;
@@ skipping 124 matching lines @@
 
 void ContentProxy::OnContentImageEncodeComplete(
     scoped_refptr<ProxyImageData> image) {
   png_data_ = image->data();
 
   // From now on we decode the image as needed to save memory.
   raw_image_ = gfx::ImageSkia();
 }
 
 }  // namespace athena