Standardize usage of virtual/override/final in chrome/

chrome/common/ini_parser.h

Index: chrome/common/ini_parser.h
diff --git a/chrome/common/ini_parser.h b/chrome/common/ini_parser.h
index 4c63a50a29f520f9cfbbb2638be7da2321397168..7ca7b5f792d35f238ebc62fba6e45eb977eb4e31 100644
--- a/chrome/common/ini_parser.h
+++ b/chrome/common/ini_parser.h
@@ -46,15 +46,15 @@ class INIParser {
 class DictionaryValueINIParser : public INIParser {
  public:
   DictionaryValueINIParser();
-  virtual ~DictionaryValueINIParser();
+  ~DictionaryValueINIParser() override;
 
   const base::DictionaryValue& root() const { return root_; }
 
  private:
   // INIParser implementation.
-  virtual void HandleTriplet(const std::string& section,
-                             const std::string& key,
-                             const std::string& value) override;
+  void HandleTriplet(const std::string& section,
+                     const std::string& key,
+                     const std::string& value) override;
 
   base::DictionaryValue root_;