am 708ec39c: Don\'t send late frames to software encoders for encoding

Merge commit '708ec39c21568e0c2aa3d20c681f0e14ee6134ad' into gingerbread-plus-aosp

* commit '708ec39c21568e0c2aa3d20c681f0e14ee6134ad':
  Don't send late frames to software encoders for encoding