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

chrome/browser/ui/webui/instant_ui.cc

 // 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.
 
 #include "chrome/browser/ui/webui/instant_ui.h"
 
 #include "base/bind.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
@@ skipping 33 matching lines @@
 #endif  // !defined(OS_ANDROID)
 
 // This class receives JavaScript messages from the renderer.
 // Note that the WebUI infrastructure runs on the UI thread, therefore all of
 // this class's methods are expected to run on the UI thread.
 class InstantUIMessageHandler
     : public content::WebUIMessageHandler,
       public base::SupportsWeakPtr<InstantUIMessageHandler> {
  public:
   InstantUIMessageHandler();
-  virtual ~InstantUIMessageHandler();
+  ~InstantUIMessageHandler() override;
 
   // WebUIMessageHandler implementation.
-  virtual void RegisterMessages() override;
+  void RegisterMessages() override;
 
  private:
   void GetPreferenceValue(const base::ListValue* args);
   void SetPreferenceValue(const base::ListValue* args);
   void GetDebugInfo(const base::ListValue* value);
   void ClearDebugInfo(const base::ListValue* value);
 
   DISALLOW_COPY_AND_ASSIGN(InstantUIMessageHandler);
 };
 
@@ skipping 102 matching lines @@
 }
 
 // static
 void InstantUI::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterStringPref(
       prefs::kInstantUIZeroSuggestUrlPrefix,
       std::string(),
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }