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

chrome/browser/autocomplete/autocomplete_classifier.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_AUTOCOMPLETE_AUTOCOMPLETE_CLASSIFIER_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CLASSIFIER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/metrics/proto/omnibox_event.pb.h"
 #include "components/omnibox/autocomplete_scheme_classifier.h"
 
 class AutocompleteController;
 struct AutocompleteMatch;
 class GURL;
 
 class AutocompleteClassifier : public KeyedService {
  public:
   // Bitmap of AutocompleteProvider::Type values describing the default set of
   // providers queried for the omnibox.  Intended to be passed to
   // AutocompleteController().
   static const int kDefaultOmniboxProviders;
 
   AutocompleteClassifier(
       scoped_ptr<AutocompleteController> controller_,
       scoped_ptr<AutocompleteSchemeClassifier> scheme_classifier);
-  virtual ~AutocompleteClassifier();
+  ~AutocompleteClassifier() override;
 
   // Given some string |text| that the user wants to use for navigation,
   // determines how it should be interpreted.
   // |prefer_keyword| should be true the when keyword UI is onscreen; see
   // comments on AutocompleteController::Start().
   // |allow_exact_keyword_match| should be true when treating the string as a
   // potential keyword search is valid; see
   // AutocompleteInput::allow_exact_keyword_match().
   // |page_classification| gives information about the context (e.g., is the
   // user on a search results page doing search term replacement); this may
   // be useful in deciding how the input should be interpreted.
   // |match| should be a non-NULL outparam that will be set to the default
   // match for this input, if any (for invalid input, there will be no default
   // match, and |match| will be left unchanged).  |alternate_nav_url| is a
   // possibly-NULL outparam that, if non-NULL, will be set to the navigational
   // URL (if any) in case of an accidental search; see comments on
   // AutocompleteResult::alternate_nav_url_ in autocomplete.h.
   void Classify(const base::string16& text,
                 bool prefer_keyword,
                 bool allow_exact_keyword_match,
                 metrics::OmniboxEventProto::PageClassification
                     page_classification,
                 AutocompleteMatch* match,
                 GURL* alternate_nav_url);
 
  private:
   // KeyedService:
-  virtual void Shutdown() override;
+  void Shutdown() override;
 
   scoped_ptr<AutocompleteController> controller_;
   scoped_ptr<AutocompleteSchemeClassifier> scheme_classifier_;
 
   // Are we currently in Classify? Used to verify Classify isn't invoked
   // recursively, since this can corrupt state and cause crashes.
   bool inside_classify_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AutocompleteClassifier);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CLASSIFIER_H_