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

chrome/browser/spellchecker/spellcheck_message_filter_mac.h

 // 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.
 
 #ifndef CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_MESSAGE_FILTER_MAC_H_
 #define CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_MESSAGE_FILTER_MAC_H_
 
 #include <map>
 
 #include "chrome/browser/spellchecker/spellcheck_message_filter.h"
 #include "chrome/common/spellcheck_result.h"
 #include "content/public/browser/browser_message_filter.h"
 
 // A message filter implementation that receives
 // the Mac-specific spell checker requests from SpellCheckProvider.
 class SpellCheckMessageFilterMac : public content::BrowserMessageFilter {
  public:
   explicit SpellCheckMessageFilterMac(int render_process_id);
 
   // BrowserMessageFilter implementation.
-  virtual void OverrideThreadForMessage(
-      const IPC::Message& message,
-      content::BrowserThread::ID* thread) override;
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
+  void OverrideThreadForMessage(const IPC::Message& message,
+                                content::BrowserThread::ID* thread) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
   // Adjusts remote_results by examining local_results. Any result that's both
   // local and remote stays type SPELLING, all others are flagged GRAMMAR.
   // (This is needed to force gray underline for remote-only results.)
   static void CombineResults(
       std::vector<SpellCheckResult>* remote_results,
       const std::vector<SpellCheckResult>& local_results);
 
  private:
   friend class TestingSpellCheckMessageFilter;
   friend class SpellcheckMessageFilterMacTest;
 
-  virtual ~SpellCheckMessageFilterMac();
+  ~SpellCheckMessageFilterMac() override;
 
   void OnCheckSpelling(const base::string16& word, int route_id, bool* correct);
   void OnFillSuggestionList(const base::string16& word,
                             std::vector<base::string16>* suggestions);
   void OnShowSpellingPanel(bool show);
   void OnUpdateSpellingPanelWithMisspelledWord(const base::string16& word);
   void OnRequestTextCheck(int route_id,
                           int identifier,
                           const base::string16& text,
                           std::vector<SpellCheckMarker> markers);
 
   int ToDocumentTag(int route_id);
   void RetireDocumentTag(int route_id);
   std::map<int,int> tag_map_;
 
   int render_process_id_;
 
   // A JSON-RPC client that calls the Spelling service in the background.
   scoped_ptr<SpellingServiceClient> client_;
 
   DISALLOW_COPY_AND_ASSIGN(SpellCheckMessageFilterMac);
 };
 
 #endif  // CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_MESSAGE_FILTER_MAC_H_