Standardize usage of virtual/override/final in content/

content/shell/tools/plugin/Tests/NPRuntimeRemoveProperty.cpp

 // Copyright 2014 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.
 
 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 74 matching lines @@
         NPIdentifier m_lastRemovedProperty;
     };
 
     struct PluginObject : Object<PluginObject> {
     public:
         PluginObject()
             : m_testObject(0)
         {
         }
 
-        virtual ~PluginObject()
-        {
+        ~PluginObject() override {
             if (m_testObject)
                 pluginTest()->NPN_ReleaseObject(m_testObject);
         }
 
         bool hasMethod(NPIdentifier methodName)
         {
             if (identifierIs(methodName, "testRemoveProperty"))
                 return true;
 
             return false;
@@ skipping 45 matching lines @@
                 m_testObject = TestObject::create(pluginTest());
 
             OBJECT_TO_NPVARIANT(pluginTest()->NPN_RetainObject(m_testObject), *result);
             return true;
         }
 
     private:
         NPObject* m_testObject;
     };
 
-    virtual NPError NPP_GetValue(NPPVariable variable, void* value) override {
+    NPError NPP_GetValue(NPPVariable variable, void* value) override {
         if (variable != NPPVpluginScriptableNPObject)
             return NPERR_GENERIC_ERROR;
 
         *(NPObject**)value = PluginObject::create(this);
 
         return NPERR_NO_ERROR;
     }
 
 };
 
 static PluginTest::Register<NPRuntimeRemoveProperty> npRuntimeRemoveProperty("npruntime-remove-property");