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

chrome/browser/extensions/api/preference/preference_api.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/extensions/api/preference/preference_api.h"
 
 #include <map>
 #include <utility>
 
 #include "base/lazy_instance.h"
@@ skipping 106 matching lines @@
      APIPermission::kAccessibilityFeaturesRead,
      APIPermission::kAccessibilityFeaturesModify},
     {"virtualKeyboard", prefs::kAccessibilityVirtualKeyboardEnabled,
      APIPermission::kAccessibilityFeaturesRead,
      APIPermission::kAccessibilityFeaturesModify},
 #endif
 };
 
 class IdentityPrefTransformer : public PrefTransformerInterface {
  public:
-  virtual base::Value* ExtensionToBrowserPref(const base::Value* extension_pref,
-                                              std::string* error,
-                                              bool* bad_message) override {
+  base::Value* ExtensionToBrowserPref(const base::Value* extension_pref,
+                                      std::string* error,
+                                      bool* bad_message) override {
     return extension_pref->DeepCopy();
   }
 
-  virtual base::Value* BrowserToExtensionPref(
+  base::Value* BrowserToExtensionPref(
       const base::Value* browser_pref) override {
     return browser_pref->DeepCopy();
   }
 };
 
 class InvertBooleanTransformer : public PrefTransformerInterface {
  public:
-  virtual base::Value* ExtensionToBrowserPref(const base::Value* extension_pref,
-                                              std::string* error,
-                                              bool* bad_message) override {
+  base::Value* ExtensionToBrowserPref(const base::Value* extension_pref,
+                                      std::string* error,
+                                      bool* bad_message) override {
     return InvertBooleanValue(extension_pref);
   }
 
-  virtual base::Value* BrowserToExtensionPref(
+  base::Value* BrowserToExtensionPref(
       const base::Value* browser_pref) override {
     return InvertBooleanValue(browser_pref);
   }
 
  private:
   static base::Value* InvertBooleanValue(const base::Value* value) {
     bool bool_value = false;
     bool result = value->GetAsBoolean(&bool_value);
     DCHECK(result);
     return new base::FundamentalValue(!bool_value);
@@ skipping 559 matching lines @@
           pref_key, PreferenceFunction::PERMISSION_TYPE_WRITE, &browser_pref)) {
     return false;
   }
 
   PreferenceAPI::Get(GetProfile())
       ->RemoveExtensionControlledPref(extension_id(), browser_pref, scope);
   return true;
 }
 
 }  // namespace extensions