--- a/dom/base/nsIDocument.h
+++ b/dom/base/nsIDocument.h
@@ -3031,23 +3031,16 @@ protected:
   nsTArray<nsAutoPtr<nsPropertyTable> > mExtraPropertyTables;
 
   // Our cached .children collection
   nsCOMPtr<nsIHTMLCollection> mChildrenCollection;
 
   // container for per-context fonts (downloadable, SVG, etc.)
   RefPtr<mozilla::dom::FontFaceSet> mFontFaceSet;
 
-  // XXXheycam rust-bindgen currently doesn't generate correctly aligned fields
-  // to represent the following bitfields if they are preceded by something
-  // non-pointer aligned, so if adding non-pointer sized fields, please do so
-  // somewhere other than right here.
-  //
-  // https://github.com/servo/rust-bindgen/issues/111
-
   // True if BIDI is enabled.
   bool mBidiEnabled : 1;
   // True if a MathML element has ever been owned by this document.
   bool mMathMLEnabled : 1;
 
   // True if this document is the initial document for a window.  This should
   // basically be true only for documents that exist in newly-opened windows or
   // documents created to satisfy a GetDocument() on a window when there's no