Update HTML canvas classes to use OVERRIDE / FINAL when needed

Source/core/html/canvas/ANGLEInstancedArrays.h

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 20 matching lines @@
 #define ANGLEInstancedArrays_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/html/canvas/WebGLExtension.h"
 #include "wtf/PassRefPtr.h"
 
 namespace WebCore {
 
 class WebGLRenderingContext;
 
-class ANGLEInstancedArrays : public WebGLExtension, public ScriptWrappable {
+class ANGLEInstancedArrays FINAL : public WebGLExtension, public ScriptWrappable {
 public:
     static PassRefPtr<ANGLEInstancedArrays> create(WebGLRenderingContext*);
     static bool supported(WebGLRenderingContext*);
     static const char* extensionName();
 
     virtual ~ANGLEInstancedArrays();
-    virtual ExtensionName name() const;
+    virtual ExtensionName name() const OVERRIDE;
 
     void drawArraysInstancedANGLE(GLenum mode, GLint first, GLsizei count, GLsizei primcount);
     void drawElementsInstancedANGLE(GLenum mode, GLsizei count, GLenum type, GLintptr offset, GLsizei primcount);
     void vertexAttribDivisorANGLE(GLuint index, GLuint divisor);
 
 private:
     ANGLEInstancedArrays(WebGLRenderingContext*);
 };
 
 } // namespace WebCore
 
 #endif // ANGLEInstancedArrays_h