Update {virtual,override} to follow C++11 style in chrome.

chrome/renderer/spellchecker/spellcheck_provider.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_RENDERER_SPELLCHECKER_SPELLCHECK_PROVIDER_H_
 #define CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_PROVIDER_H_
 
 #include <vector>
 
 #include "base/id_map.h"
@@ skipping 50 matching lines @@
  private:
   friend class TestingSpellCheckProvider;
 
   // Tries to satisfy a spell check request from the cache in |last_request_|.
   // Returns true (and cancels/finishes the completion) if it can, false
   // if the provider should forward the query on.
   bool SatisfyRequestFromCache(const base::string16& text,
                                blink::WebTextCheckingCompletion* completion);
 
   // blink::WebSpellCheckClient implementation.
-  virtual void spellCheck(
+  void spellCheck(
       const blink::WebString& text,
       int& offset,
       int& length,
       blink::WebVector<blink::WebString>* optional_suggestions) override;
-  virtual void checkTextOfParagraph(
+  void checkTextOfParagraph(
       const blink::WebString& text,
       blink::WebTextCheckingTypeMask mask,
       blink::WebVector<blink::WebTextCheckingResult>* results) override;
 
-  virtual void requestCheckingOfText(
+  void requestCheckingOfText(
       const blink::WebString& text,
       const blink::WebVector<uint32>& markers,
       const blink::WebVector<unsigned>& marker_offsets,
       blink::WebTextCheckingCompletion* completion) override;
 
-  virtual blink::WebString autoCorrectWord(
+  blink::WebString autoCorrectWord(
       const blink::WebString& misspelled_word) override;
-  virtual void showSpellingUI(bool show) override;
-  virtual bool isShowingSpellingUI() override;
-  virtual void updateSpellingUIWithMisspelledWord(
+  void showSpellingUI(bool show) override;
+  bool isShowingSpellingUI() override;
+  void updateSpellingUIWithMisspelledWord(
       const blink::WebString& word) override;
 
 #if !defined(OS_MACOSX)
   void OnRespondSpellingService(
       int identifier,
       bool succeeded,
       const base::string16& text,
       const std::vector<SpellCheckResult>& results);
 #endif
 
@@ skipping 20 matching lines @@
   // True if the browser is showing the spelling panel for us.
   bool spelling_panel_visible_;
 
   // Weak pointer to shared (per RenderView) spellcheck data.
   SpellCheck* spellcheck_;
 
   DISALLOW_COPY_AND_ASSIGN(SpellCheckProvider);
 };
 
 #endif  // CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_PROVIDER_H_