Make WebGL objects scriptwrappable so that binding integrity checks may be applied to them.

Source/core/html/canvas/OESTextureHalfFloatLinear.cpp

Index: Source/core/html/canvas/OESTextureHalfFloatLinear.cpp
diff --git a/Source/core/html/canvas/OESTextureHalfFloatLinear.cpp b/Source/core/html/canvas/OESTextureHalfFloatLinear.cpp
index 4b222ec419f23ab549d4fe248d13f64c0fed101c..2b51eb4e431b50bf5af37a09395e8adc8b458b34 100644
--- a/Source/core/html/canvas/OESTextureHalfFloatLinear.cpp
+++ b/Source/core/html/canvas/OESTextureHalfFloatLinear.cpp
@@ -34,6 +34,7 @@ namespace WebCore {
 OESTextureHalfFloatLinear::OESTextureHalfFloatLinear(WebGLRenderingContext* context)
     : WebGLExtension(context)
 {
+    ScriptWrappable::init(this);
     context->graphicsContext3D()->getExtensions()->ensureEnabled("GL_OES_texture_half_float_linear");
 }