Bug 696651 part 2 - Establish document.write() insertion position before re-entrant calls can occur. r=Olli.Pettay.

parser/html/nsHtml5OwningUTF16Buffer.cpp

@@ -77,6 +77,13 @@ nsHtml5OwningUTF16Buffer::FalliblyCreate(PRInt32 aLength)
   return newObj.forget();
 }
 
+void
+nsHtml5OwningUTF16Buffer::Swap(nsHtml5OwningUTF16Buffer* aOther)
+{
+  nsHtml5UTF16Buffer::Swap(aOther);
+}
+
+
 // Not using macros for AddRef and Release in order to be able to refcount on
 // and create on different threads.