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

chrome/browser/plugins/plugins_resource_service.h

Index: chrome/browser/plugins/plugins_resource_service.h
diff --git a/chrome/browser/plugins/plugins_resource_service.h b/chrome/browser/plugins/plugins_resource_service.h
index 44f498272b432c09ed3e144ca8da478427866880..f5e7cbcfb0d8ad58088ae8fa23d960c52618684a 100644
--- a/chrome/browser/plugins/plugins_resource_service.h
+++ b/chrome/browser/plugins/plugins_resource_service.h
@@ -21,10 +21,10 @@ class PluginsResourceService : public WebResourceService {
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
  private:
-  virtual ~PluginsResourceService();
+  ~PluginsResourceService() override;
 
   // WebResourceService override to process the parsed information.
-  virtual void Unpack(const base::DictionaryValue& parsed_json) override;
+  void Unpack(const base::DictionaryValue& parsed_json) override;
 
   DISALLOW_COPY_AND_ASSIGN(PluginsResourceService);
 };