Update fetch / loader classes to use OVERRIDE / FINAL when needed

Source/core/fetch/ShaderResource.h

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 18 matching lines @@
 
 #ifndef ShaderResource_h
 #define ShaderResource_h
 
 #include "core/fetch/ResourcePtr.h"
 
 namespace WebCore {
 
 class TextResourceDecoder;
 
-class ShaderResource : public Resource {
+class ShaderResource FINAL : public Resource {
 public:
     typedef ResourceClient ClientType;
 
     ShaderResource(const ResourceRequest&);
     virtual ~ShaderResource();
 
     const String& shaderString();
 
 private:
     OwnPtr<TextResourceDecoder> m_decoder;
     String m_shaderString;
 };
 
 DEFINE_RESOURCE_TYPE_CASTS(Shader);
 
 }
 
 
 #endif // ShaderResource_h