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

chrome/browser/plugins/plugin_prefs.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_PLUGINS_PLUGIN_PREFS_H_
 #define CHROME_BROWSER_PLUGINS_PLUGIN_PREFS_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 57 matching lines @@
   // Returns whether there is a policy enabling or disabling plug-ins of the
   // given name.
   PolicyStatus PolicyStatusForPlugin(const base::string16& name) const;
 
   // Returns whether the plugin is enabled or not.
   bool IsPluginEnabled(const content::WebPluginInfo& plugin) const;
 
   void set_profile(Profile* profile) { profile_ = profile; }
 
   // RefCountedProfileKeyedBase method override.
-  virtual void ShutdownOnUIThread() override;
+  void ShutdownOnUIThread() override;
 
  private:
   friend class base::RefCountedThreadSafe<PluginPrefs>;
   friend class PluginPrefsTest;
 
   // PluginState stores a mapping from plugin path to enable/disable state. We
   // don't simply use a std::map, because we would like to keep the state of
   // some plugins in sync with each other.
   class PluginState {
    public:
     PluginState();
     ~PluginState();
 
     // Returns whether |plugin| is found. If |plugin| cannot be found,
     // |*enabled| won't be touched.
     bool Get(const base::FilePath& plugin, bool* enabled) const;
     void Set(const base::FilePath& plugin, bool enabled);
 
    private:
     base::FilePath ConvertMapKey(const base::FilePath& plugin) const;
 
     std::map<base::FilePath, bool> state_;
   };
 
-  virtual ~PluginPrefs();
+  ~PluginPrefs() override;
 
   // Called to update one of the policy_xyz patterns below when a
   // preference changes.
   void UpdatePatternsAndNotify(std::set<base::string16>* patterns,
                                const std::string& pref_name);
 
   // Allows unit tests to directly set enforced plug-in patterns.
   void SetPolicyEnforcedPluginPatterns(
       const std::set<base::string16>& disabled_patterns,
       const std::set<base::string16>& disabled_exception_patterns,
@@ skipping 39 matching lines @@
 
   // Weak pointer, owned by the profile.
   PrefService* prefs_;
 
   PrefChangeRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginPrefs);
 };
 
 #endif  // CHROME_BROWSER_PLUGINS_PLUGIN_PREFS_H_