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

Source/core/html/canvas/OESElementIndexUint.cpp

Index: Source/core/html/canvas/OESElementIndexUint.cpp
diff --git a/Source/core/html/canvas/OESElementIndexUint.cpp b/Source/core/html/canvas/OESElementIndexUint.cpp
index ce7f2670b076ad64dbf891d52b58e4707b22943c..be10812b5008971bd6f6038e6d82b03ba51f8d2d 100644
--- a/Source/core/html/canvas/OESElementIndexUint.cpp
+++ b/Source/core/html/canvas/OESElementIndexUint.cpp
@@ -33,6 +33,7 @@ namespace WebCore {
 OESElementIndexUint::OESElementIndexUint(WebGLRenderingContext* context)
     : WebGLExtension(context)
 {
+    ScriptWrappable::init(this);
     context->graphicsContext3D()->getExtensions()->ensureEnabled("GL_OES_element_index_uint");
 }