We should use 32-bit indices for element attributes, especially now that Vector is already limited to 32-bit capacity.
Created attachment 199417 [details]
Oliver/Antti, what do you think about this? It seems to me like we want to minimize the amount of code that deals in size_t indices into arrays/vectors whose capacity is limited to 32 bits.
Comment on attachment 199417 [details]
Sounds great to me.
Committed r149061: <http://trac.webkit.org/changeset/149061>