pack_program_swap.c not in cr1.8

Hi.

I have an older version of chromium 1.7 and noticed it contained the file pack_program_swap.c and supported the call crPackProgramStringARBSWAP.  I also have looked at the chromium v1.8 code that is available and have noticed the pack_program_swap.c file does not exist.  Is there a reason for the file to not be included in the chromium v1.8?  


Thanks,
Alicia


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