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

content/browser/appcache/appcache_response.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 "content/browser/appcache/appcache_response.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
@@ skipping 19 matching lines @@
 // pickle is transfered to the WrappedPickleIOBuffer object.
 class WrappedPickleIOBuffer : public net::WrappedIOBuffer {
  public:
   explicit WrappedPickleIOBuffer(const Pickle* pickle) :
       net::WrappedIOBuffer(reinterpret_cast<const char*>(pickle->data())),
       pickle_(pickle) {
     DCHECK(pickle->data());
   }
 
  private:
-  virtual ~WrappedPickleIOBuffer() {}
+  ~WrappedPickleIOBuffer() override {}
 
   scoped_ptr<const Pickle> pickle_;
 };
 
 }  // anon namespace
 
 
 // AppCacheResponseInfo ----------------------------------------------
 
 AppCacheResponseInfo::AppCacheResponseInfo(
@@ skipping 363 matching lines @@
     create_callback_.Reset();
   }
 
   if (info_buffer_.get())
     ContinueWriteInfo();
   else
     ContinueWriteData();
 }
 
 }  // namespace content