Merge "media: document MediaFormat.KEY_FRAME_RATE better" into nyc-dev
am: 017567ae1d

* commit '017567ae1d7c67e44824ee32a812638b88b48779':
  media: document MediaFormat.KEY_FRAME_RATE better

Change-Id: I32093b7455de821ee8c29832f6a580deba94e111