Implement OES_texture_float_linear and OES_texture_half_float_linear extensions in WebGL.

Source/core/html/canvas/OESTextureHalfFloatLinear.h

Index: Source/core/html/canvas/OESTextureHalfFloatLinear.h
diff --git a/Source/core/html/canvas/WebGLDepthTexture.h b/Source/core/html/canvas/OESTextureHalfFloatLinear.h
similarity index 81%
copy from Source/core/html/canvas/WebGLDepthTexture.h
copy to Source/core/html/canvas/OESTextureHalfFloatLinear.h
index 7573b1a76789df034ab996344d57e2a0986898d0..d2b0e50e4fd149332d8260486fc3722fb0b48f08 100644
--- a/Source/core/html/canvas/WebGLDepthTexture.h
+++ b/Source/core/html/canvas/OESTextureHalfFloatLinear.h
@@ -23,27 +23,27 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef WebGLDepthTexture_h
-#define WebGLDepthTexture_h
+#ifndef OESTextureHalfFloatLinear_h
+#define OESTextureHalfFloatLinear_h
 
 #include "core/html/canvas/WebGLExtension.h"
-#include <wtf/PassOwnPtr.h>
+#include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
-class WebGLDepthTexture : public WebGLExtension {
+class OESTextureHalfFloatLinear : public WebGLExtension {
 public:
-    static PassOwnPtr<WebGLDepthTexture> create(WebGLRenderingContext*);
+    static PassOwnPtr<OESTextureHalfFloatLinear> create(WebGLRenderingContext*);
     static bool supported(WebGLRenderingContext*);
     static const char* getExtensionName();
 
-    virtual ~WebGLDepthTexture();
+    virtual ~OESTextureHalfFloatLinear();
     virtual ExtensionName getName() const;
 
 private:
-    WebGLDepthTexture(WebGLRenderingContext*);
+    OESTextureHalfFloatLinear(WebGLRenderingContext*);
 };
 
 } // namespace WebCore
 
-#endif // WebGLDepthTexture_h
+#endif // OESTextureHalfFloatLinear_h