Reason for revert:
The issue is now hopefully fixed.
Original issue's description:
> Revert of Add QP for FFmpeg H264 decoder. (patchset #4 id:200001 of https://codereview.webrtc.org/2649133007/ )
>
> Reason for revert:
> Let's revert this while we investigate a problem in H264 bitstream parser.
>
> Original issue's description:
> > Add QP for FFmpeg H264 decoder.
> >
> > BUG=webrtc:6541
> >
> > Review-Url: https://codereview.webrtc.org/2649133007
> > Cr-Commit-Position: refs/heads/master@{#16942}
> > Committed: 879f4f6c31
>
> TBR=sprang@webrtc.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=webrtc:6541, chromium:697795
>
> Review-Url: https://codereview.webrtc.org/2726973003
> Cr-Commit-Position: refs/heads/master@{#16974}
> Committed: 4c6df8893eTBR=sprang@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:6541, chromium:697795
Review-Url: https://codereview.webrtc.org/2735733002
Cr-Commit-Position: refs/heads/master@{#17061}
b8102e0634