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

content/renderer/internal_document_state_data.h

 // Copyright (c) 2013 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.
 
 #ifndef CONTENT_RENDERER_INTERNAL_DOCUMENT_STATE_DATA_H_
 #define CONTENT_RENDERER_INTERNAL_DOCUMENT_STATE_DATA_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 75 matching lines @@
   }
   void clear_cache_policy_override() {
     cache_policy_override_set_ = false;
     cache_policy_override_ = blink::WebURLRequest::UseProtocolCachePolicy;
   }
   bool is_cache_policy_override_set() const {
     return cache_policy_override_set_;
   }
 
  protected:
-  virtual ~InternalDocumentStateData();
+  ~InternalDocumentStateData() override;
 
  private:
   bool did_first_visually_non_empty_layout_;
   bool did_first_visually_non_empty_paint_;
   int http_status_code_;
   GURL searchable_form_url_;
   std::string searchable_form_encoding_;
   bool use_error_page_;
   bool is_overriding_user_agent_;
   bool must_reset_scroll_and_scale_state_;
   bool cache_policy_override_set_;
   blink::WebURLRequest::CachePolicy cache_policy_override_;
 
   DISALLOW_COPY_AND_ASSIGN(InternalDocumentStateData);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_INTERNAL_DOCUMENT_STATE_DATA_H_