Revert of Make rtcp parsing implementation private in RtcpReceiver

Revert of Make rtcp parsing implementation private in RtcpReceiver (patchset #1 id:1 of https://codereview.webrtc.org/2320603002/ )

Reason for revert:
Breaks fuzzer compilation.

Original issue's description:
> Make rtcp parsing implementation private in RtcpReceiver:
> Function just for Parse and for Callbacks moved to private section.
> All handles moved from protected to private section.
>
> BUG=webrtc:5260
> R=sprang@webrtc.org
>
> Committed: https://crrev.com/faf708e238c7b43a732fbebf79ac9298b4b95a95
> Cr-Commit-Position: refs/heads/master@{#14181}

TBR=sprang@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5260
Committed: https://crrev.com/180e4525ca7c9a23602cdf37a8756df7d23e7143
Cr-Commit-Position: refs/heads/master@{#14182}

[danilchap, 2016-09-12 08:40:26]

The CQ bit was checked by danilchap@webrtc.org

[danilchap, 2016-09-12 08:40:26]

Created Revert of Make rtcp parsing implementation private in RtcpReceiver

[commit-bot: I haz the power, 2016-09-12 08:40:34]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2016-09-12 08:40:43]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-12 08:40:51]

Description was changed from

==========
Revert of Make rtcp parsing implementation private in RtcpReceiver (patchset #1
id:1 of https://codereview.webrtc.org/2320603002/ )

Reason for revert:
Breaks fuzzer compilation.

Original issue's description:
> Make rtcp parsing implementation private in RtcpReceiver:
> Function just for Parse and for Callbacks moved to private section.
> All handles moved from protected to private section.
> 
> BUG=webrtc:5260
> R=sprang@webrtc.org
> 
> Committed: https://crrev.com/faf708e238c7b43a732fbebf79ac9298b4b95a95
> Cr-Commit-Position: refs/heads/master@{#14181}

TBR=sprang@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5260
==========

to

==========
Revert of Make rtcp parsing implementation private in RtcpReceiver (patchset #1
id:1 of https://codereview.webrtc.org/2320603002/ )

Reason for revert:
Breaks fuzzer compilation.

Original issue's description:
> Make rtcp parsing implementation private in RtcpReceiver:
> Function just for Parse and for Callbacks moved to private section.
> All handles moved from protected to private section.
>
> BUG=webrtc:5260
> R=sprang@webrtc.org
>
> Committed: https://crrev.com/faf708e238c7b43a732fbebf79ac9298b4b95a95
> Cr-Commit-Position: refs/heads/master@{#14181}

TBR=sprang@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5260

Committed: https://crrev.com/180e4525ca7c9a23602cdf37a8756df7d23e7143
Cr-Commit-Position: refs/heads/master@{#14182}
==========

[commit-bot: I haz the power, 2016-09-12 08:40:52]

Patchset 1 (id:??) landed as
https://crrev.com/180e4525ca7c9a23602cdf37a8756df7d23e7143
Cr-Commit-Position: refs/heads/master@{#14182}

[danilchap, 2016-09-13 10:43:37]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/2336213002/ by danilchap@webrtc.org.

The reason for reverting is: Fuzzer changed not use functions moved to private..