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

Source/core/html/canvas/WebGLBuffer.cpp

Index: Source/core/html/canvas/WebGLBuffer.cpp
diff --git a/Source/core/html/canvas/WebGLBuffer.cpp b/Source/core/html/canvas/WebGLBuffer.cpp
index 9e4bc1418a8861ee6b69686ddbd900f45aed9ad4..c586932df4638f310b2f25bba9e9f9203830b814 100644
--- a/Source/core/html/canvas/WebGLBuffer.cpp
+++ b/Source/core/html/canvas/WebGLBuffer.cpp
@@ -43,6 +43,7 @@ WebGLBuffer::WebGLBuffer(WebGLRenderingContext* ctx)
     : WebGLSharedObject(ctx)
     , m_target(0)
 {
+    ScriptWrappable::init(this);
     setObject(ctx->graphicsContext3D()->createBuffer());
 }