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

chrome/renderer/spellchecker/hunspell_engine.h

Index: chrome/renderer/spellchecker/hunspell_engine.h
diff --git a/chrome/renderer/spellchecker/hunspell_engine.h b/chrome/renderer/spellchecker/hunspell_engine.h
index 432928321c906d914d8dcf0c809be14113fb6277..77d32c31de8fe1fa2bcb3b9ef65b25280baaab38 100644
--- a/chrome/renderer/spellchecker/hunspell_engine.h
+++ b/chrome/renderer/spellchecker/hunspell_engine.h
@@ -23,15 +23,14 @@ class MemoryMappedFile;
 class HunspellEngine : public SpellingEngine {
  public:
   HunspellEngine();
-  virtual ~HunspellEngine();
+  ~HunspellEngine() override;
 
-  virtual void Init(base::File file) override;
+  void Init(base::File file) override;
 
-  virtual bool InitializeIfNeeded() override;
-  virtual bool IsEnabled() override;
-  virtual bool CheckSpelling(const base::string16& word_to_check,
-                             int tag) override;
-  virtual void FillSuggestionList(
+  bool InitializeIfNeeded() override;
+  bool IsEnabled() override;
+  bool CheckSpelling(const base::string16& word_to_check, int tag) override;
+  void FillSuggestionList(
       const base::string16& wrong_word,
       std::vector<base::string16>* optional_suggestions) override;