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

chrome/browser/content_settings/content_settings_custom_extension_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_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_CUSTOM_EXTENSION_PROVIDER_H_
 #define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_CUSTOM_EXTENSION_PROVIDER_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/api/content_settings/content_settings_store.h"
 #include "components/content_settings/core/browser/content_settings_observable_provider.h"
 
 namespace content_settings {
 
 // A content settings provider which manages settings defined by extensions.
 class CustomExtensionProvider : public ObservableProvider,
                           public extensions::ContentSettingsStore::Observer {
  public:
   CustomExtensionProvider(const scoped_refptr<extensions::ContentSettingsStore>&
                               extensions_settings,
                           bool incognito);
 
-  virtual ~CustomExtensionProvider();
+  ~CustomExtensionProvider() override;
 
   // ProviderInterface methods:
-  virtual RuleIterator* GetRuleIterator(
-      ContentSettingsType content_type,
-      const ResourceIdentifier& resource_identifier,
-      bool incognito) const override;
+  RuleIterator* GetRuleIterator(ContentSettingsType content_type,
+                                const ResourceIdentifier& resource_identifier,
+                                bool incognito) const override;
 
-  virtual bool SetWebsiteSetting(
-      const ContentSettingsPattern& primary_pattern,
-      const ContentSettingsPattern& secondary_pattern,
-      ContentSettingsType content_type,
-      const ResourceIdentifier& resource_identifier,
-      base::Value* value) override;
+  bool SetWebsiteSetting(const ContentSettingsPattern& primary_pattern,
+                         const ContentSettingsPattern& secondary_pattern,
+                         ContentSettingsType content_type,
+                         const ResourceIdentifier& resource_identifier,
+                         base::Value* value) override;
 
-  virtual void ClearAllContentSettingsRules(ContentSettingsType content_type)
-      override {}
+  void ClearAllContentSettingsRules(ContentSettingsType content_type) override {
+  }
 
-  virtual void ShutdownOnUIThread() override;
+  void ShutdownOnUIThread() override;
 
   // extensions::ContentSettingsStore::Observer methods:
-  virtual void OnContentSettingChanged(const std::string& extension_id,
-                                       bool incognito) override;
+  void OnContentSettingChanged(const std::string& extension_id,
+                               bool incognito) override;
 
  private:
   // Specifies whether this provider manages settings for incognito or regular
   // sessions.
   bool incognito_;
 
   // The backend storing content setting rules defined by extensions.
   scoped_refptr<extensions::ContentSettingsStore> extensions_settings_;
 
   DISALLOW_COPY_AND_ASSIGN(CustomExtensionProvider);
 };
 
 }  // namespace content_settings
 
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_CUSTOM_EXTENSION_PROVIDER_H_