Implement OES_texture_float_linear and OES_texture_half_float_linear extensions in WebGL.

Source/core/html/canvas/OESTextureFloatLinear.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
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  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
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-#ifndef WebGLDepthTexture_h
-#define WebGLDepthTexture_h
+#ifndef OESTextureFloatLinear_h
+#define OESTextureFloatLinear_h
 
 #include "core/html/canvas/WebGLExtension.h"
-#include <wtf/PassOwnPtr.h>
+#include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
-class WebGLDepthTexture : public WebGLExtension {
+class OESTextureFloatLinear : public WebGLExtension {
 public:
-    static PassOwnPtr<WebGLDepthTexture> create(WebGLRenderingContext*);
+    static PassOwnPtr<OESTextureFloatLinear> create(WebGLRenderingContext*);
     static bool supported(WebGLRenderingContext*);
     static const char* getExtensionName();
 
-    virtual ~WebGLDepthTexture();
+    virtual ~OESTextureFloatLinear();
     virtual ExtensionName getName() const;
 
 private:
-    WebGLDepthTexture(WebGLRenderingContext*);
+    OESTextureFloatLinear(WebGLRenderingContext*);
 };
 
 } // namespace WebCore
 
-#endif // WebGLDepthTexture_h
+#endif // OESTextureFloatLinear_h