Adrian Grange 0984121f49 Create function vp9_preserve_existing_gf
This code was being called from two places and
difficult to parse. I rationalized it in to a
function to improve readability.

Change-Id: I154b8fe0b84e6c01e69601e78e67bd47c954d8b6
2014-08-05 15:25:21 -07:00
..
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