Standardize usage of virtual/override/final in extensions/

extensions/browser/test_management_policy.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 EXTENSIONS_BROWSER_TEST_MANAGEMENT_POLICY_H_
 #define EXTENSIONS_BROWSER_TEST_MANAGEMENT_POLICY_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
@@ skipping 17 matching lines @@
   static std::string expected_error() {
     return "Action prohibited by test provider.";
   }
 
   TestManagementPolicyProvider();
   explicit TestManagementPolicyProvider(int prohibited_actions);
 
   void SetProhibitedActions(int prohibited_actions);
   void SetDisableReason(Extension::DisableReason reason);
 
-  virtual std::string GetDebugPolicyProviderName() const override;
+  std::string GetDebugPolicyProviderName() const override;
 
-  virtual bool UserMayLoad(const Extension* extension,
+  bool UserMayLoad(const Extension* extension,
+                   base::string16* error) const override;
+
+  bool UserMayModifySettings(const Extension* extension,
+                             base::string16* error) const override;
+
+  bool MustRemainEnabled(const Extension* extension,
+                         base::string16* error) const override;
+
+  bool MustRemainDisabled(const Extension* extension,
+                          Extension::DisableReason* reason,
+                          base::string16* error) const override;
+
+  bool MustRemainInstalled(const Extension* extension,
                            base::string16* error) const override;
 
-  virtual bool UserMayModifySettings(const Extension* extension,
-                                     base::string16* error) const override;
-
-  virtual bool MustRemainEnabled(const Extension* extension,
-                                 base::string16* error) const override;
-
-  virtual bool MustRemainDisabled(const Extension* extension,
-                                  Extension::DisableReason* reason,
-                                  base::string16* error) const override;
-
-  virtual bool MustRemainInstalled(const Extension* extension,
-                                   base::string16* error) const override;
-
  private:
   bool may_load_;
   bool may_modify_status_;
   bool must_remain_enabled_;
   bool must_remain_disabled_;
   bool must_remain_installed_;
   Extension::DisableReason disable_reason_;
 
   base::string16 error_message_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_TEST_MANAGEMENT_POLICY_H_