Standardize usage of virtual/override/final in chrome/

chrome/common/extensions/permissions/chrome_permission_message_provider.h

 // Copyright 2013 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_COMMON_EXTENSIONS_PERMISSIONS_CHROME_PERMISSION_MESSAGE_PROVIDER_H_
 #define CHROME_COMMON_EXTENSIONS_PERMISSIONS_CHROME_PERMISSION_MESSAGE_PROVIDER_H_
 
 #include <set>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/strings/string16.h"
 #include "extensions/common/permissions/permission_message_provider.h"
 
 namespace extensions {
 
 // Tested in two places:
 // 1. chrome_permission_message_provider_unittest.cc, which is a regular unit
 //    test for this class
 // 2. chrome/browser/extensions/permission_messages_unittest.cc, which is an
 //    integration test that ensures messages are correctly generated for
 //    extensions created through the extension system.
 class ChromePermissionMessageProvider : public PermissionMessageProvider {
  public:
   ChromePermissionMessageProvider();
-  virtual ~ChromePermissionMessageProvider();
+  ~ChromePermissionMessageProvider() override;
 
   // PermissionMessageProvider implementation.
-  virtual PermissionMessages GetPermissionMessages(
+  PermissionMessages GetPermissionMessages(
       const PermissionSet* permissions,
       Manifest::Type extension_type) const override;
-  virtual std::vector<base::string16> GetWarningMessages(
+  std::vector<base::string16> GetWarningMessages(
       const PermissionSet* permissions,
       Manifest::Type extension_type) const override;
-  virtual std::vector<base::string16> GetWarningMessagesDetails(
+  std::vector<base::string16> GetWarningMessagesDetails(
       const PermissionSet* permissions,
       Manifest::Type extension_type) const override;
-  virtual bool IsPrivilegeIncrease(
-      const PermissionSet* old_permissions,
-      const PermissionSet* new_permissions,
-      Manifest::Type extension_type) const override;
+  bool IsPrivilegeIncrease(const PermissionSet* old_permissions,
+                           const PermissionSet* new_permissions,
+                           Manifest::Type extension_type) const override;
 
  private:
   // Gets the permission messages for the API permissions.
   std::set<PermissionMessage> GetAPIPermissionMessages(
       const PermissionSet* permissions) const;
 
   // Gets the permission messages for the Manifest permissions.
   std::set<PermissionMessage> GetManifestPermissionMessages(
       const PermissionSet* permissions) const;
 
@@ skipping 20 matching lines @@
       const PermissionSet* old_permissions,
       const PermissionSet* new_permissions,
       Manifest::Type extension_type) const;
 
   DISALLOW_COPY_AND_ASSIGN(ChromePermissionMessageProvider);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_PERMISSIONS_CHROME_PERMISSION_MESSAGE_PROVIDER_H_