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

Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp

Index: Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp
diff --git a/Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp b/Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp
index 3241eea57c35717f8f2a22916e015301fa4b8438..6128c259188f658e22d65216413d0e38d43f7595 100644
--- a/Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp
+++ b/Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp
@@ -33,6 +33,7 @@ namespace WebCore {
 EXTTextureFilterAnisotropic::EXTTextureFilterAnisotropic(WebGLRenderingContext* context)
     : WebGLExtension(context)
 {
+    ScriptWrappable::init(this);
     context->graphicsContext3D()->getExtensions()->ensureEnabled("GL_EXT_texture_filter_anisotropic");
 }