Created attachment 608000 [details] [diff] [review] Patch, v1 The new DOM bindings need two JSClass bits at the moment, one to tell us that we have a subclass of JSClass and the other to tell us if the object has extra reserved slots for our prototype check mechanism. Eventually when we switch Window to use the new bindings we can remove the second bit. I talked with waldo about this yesterday and he recommended shrinking the number of bits for the cached proto key stuff in order to open up two more bits. Patch attached.
Created attachment 610306 [details] [diff] [review] Patch, v2 Fixed the way luke liked it!
Comment on attachment 610306 [details] [diff] [review] Patch, v2 Great, thanks!