Turn on batch_buffer_writes, now that the compiler check has been submitted.
Turn on batch_buffer_writes, now that the compiler check has been submitted.

[git-p4: change = 78682234]

youtube/spitfire,youtube/spitfire,youtube/spitfire,spt/spitfire,nicksay/spitfire,nicksay/spitfire,nicksay/spitfire,spt/spitfire,spt/spitfire,youtube/spitfire,spt/spitfire,nicksay/spitfire