Reland of Add pps id and sps id parsing to the h.264 depacketizer. (patchset #1 id:1 of https://codereview.webrtc.org/2265023002/ )

Reason for revert:
Reland this now that downstream tests have been fixed.

Original issue's description:
> Revert of Add pps id and sps id parsing to the h.264 depacketizer. (patchset #5 id:80001 of https://codereview.webrtc.org/2238253002/ )
>
> Reason for revert:
> Breaks some h264 bitstream tests downstream. Reverting for now.
>
> Original issue's description:
> > Add pps id and sps id parsing to the h.264 depacketizer.
> >
> > BUG=webrtc:6208
> >
> > Committed: https://crrev.com/abcc3de169d8896ad60e920e5677600fb3d40180
> > Cr-Commit-Position: refs/heads/master@{#13838}
>
> TBR=sprang@webrtc.org,stefan@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:6208
>
> Committed: https://crrev.com/83d79cd4a2bfbdd1abc1f75480488df4446f5fe0
> Cr-Commit-Position: refs/heads/master@{#13844}

TBR=sprang@webrtc.org,kjellander@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:6208

Review-Url: https://codereview.webrtc.org/2302893002
Cr-Original-Commit-Position: refs/heads/master@{#14042}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 8a5cef8d0a594a1f46f6eeb2a37d785f3afe236d
11 files changed