Revert of Add content type information to encoded images and corresponding rtp extension header

Revert of Add content type information to encoded images and corresponding rtp extension header (patchset #1 id:1 of https://codereview.webrtc.org/2811963002/ )

Reason for revert:
Relanded by mistake.

Original issue's description:
> Reland of Add content type information to encoded images and corresponding rtp extension header (patchset #1 id:1 of https://codereview.webrtc.org/2816463002/ )
> 
> Reason for revert:
> Reland with fixes which break API
> 
> Original issue's description:
> > Revert of Add content type information to encoded images and corresponding rtp extension header (patchset #31 id:600001 of https://codereview.webrtc.org/2772033002/ )
> > 
> > Reason for revert:
> > Breaks dependent projects.
> > 
> > Original issue's description:
> > > Add content type information to Encoded Images and add corresponding RTP extension header.
> > > Use it to separate UMA e2e delay metric between screenshare from video.
> > > Content type extension is set based on encoder settings and processed and decoders.
> > > 
> > > Also,
> > > Fix full-stack-tests to calculate RTT correctly, so new metric could be tested.
> > > 
> > > BUG=webrtc:7420
> > > 
> > > Review-Url: https://codereview.webrtc.org/2772033002
> > > Cr-Commit-Position: refs/heads/master@{#17640}
> > > Committed: https://chromium.googlesource.com/external/webrtc/+/64e739aeae5629cbbebf2a19e1d3e6b452bb6d0b
> > 
> > TBR=tommi@webrtc.org,sprang@webrtc.org,stefan@webrtc.org,nisse@webrtc.org,mflodman@webrtc.org
> > # Skipping CQ checks because original CL landed less than 1 days ago.
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> > BUG=webrtc:7420
> > 
> > Review-Url: https://codereview.webrtc.org/2816463002
> > Cr-Commit-Position: refs/heads/master@{#17644}
> > Committed: https://chromium.googlesource.com/external/webrtc/+/57218668083fce36a55efb8c8f1d31785253b8c0
> 
> TBR=tommi@webrtc.org,sprang@webrtc.org,stefan@webrtc.org,nisse@webrtc.org,mflodman@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:7420
> 
> Review-Url: https://codereview.webrtc.org/2811963002
> Cr-Commit-Position: refs/heads/master@{#17645}
> Committed: https://chromium.googlesource.com/external/webrtc/+/4fa0c4f97fec5fd7d52ed505ae1d086ded6ceb9a

TBR=tommi@webrtc.org,sprang@webrtc.org,stefan@webrtc.org,nisse@webrtc.org,mflodman@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7420
Review-Url: https://codereview.webrtc.org/2810923004
Cr-Commit-Position: refs/heads/master@{#17648}
Committed: https://chromium.googlesource.com/external/webrtc/+/29dbb1992a5722ab26bc7c0d4e17c0e91fe77c97

[ilnik, 2017-04-11 11:48:45]

The CQ bit was checked by ilnik@webrtc.org

[ilnik, 2017-04-11 11:48:46]

Created Revert of Add content type information to encoded images and
corresponding rtp extension header

[commit-bot: I haz the power, 2017-04-11 11:48:58]

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, 2017-04-11 11:49:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491911325449040, "parent_rev":
"dee5eb14e1d4e5bd894772448cc9418e94b3a967", "commit_rev":
"29dbb1992a5722ab26bc7c0d4e17c0e91fe77c97"}

[commit-bot: I haz the power, 2017-04-11 11:49:10]

Description was changed from

==========
Revert of Add content type information to encoded images and corresponding rtp
extension header (patchset #1 id:1 of https://codereview.webrtc.org/2811963002/
)

Reason for revert:
Relanded by mistake.

Original issue's description:
> Reland of Add content type information to encoded images and corresponding rtp
extension header (patchset #1 id:1 of https://codereview.webrtc.org/2816463002/
)
> 
> Reason for revert:
> Reland with fixes which break API
> 
> Original issue's description:
> > Revert of Add content type information to encoded images and corresponding
rtp extension header (patchset #31 id:600001 of
https://codereview.webrtc.org/2772033002/ )
> > 
> > Reason for revert:
> > Breaks dependent projects.
> > 
> > Original issue's description:
> > > Add content type information to Encoded Images and add corresponding RTP
extension header.
> > > Use it to separate UMA e2e delay metric between screenshare from video.
> > > Content type extension is set based on encoder settings and processed and
decoders.
> > > 
> > > Also,
> > > Fix full-stack-tests to calculate RTT correctly, so new metric could be
tested.
> > > 
> > > BUG=webrtc:7420
> > > 
> > > Review-Url: https://codereview.webrtc.org/2772033002
> > > Cr-Commit-Position: refs/heads/master@{#17640}
> > > Committed:
https://chromium.googlesource.com/external/webrtc/+/64e739aeae5629cbbebf2a19e...
> > 
> >
TBR=tommi@webrtc.org,sprang@webrtc.org,stefan@webrtc.org,nisse@webrtc.org,mfl...
> > # Skipping CQ checks because original CL landed less than 1 days ago.
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> > BUG=webrtc:7420
> > 
> > Review-Url: https://codereview.webrtc.org/2816463002
> > Cr-Commit-Position: refs/heads/master@{#17644}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/57218668083fce36a55efb8c8...
> 
>
TBR=tommi@webrtc.org,sprang@webrtc.org,stefan@webrtc.org,nisse@webrtc.org,mfl...
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:7420
> 
> Review-Url: https://codereview.webrtc.org/2811963002
> Cr-Commit-Position: refs/heads/master@{#17645}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/4fa0c4f97fec5fd7d52ed505a...

TBR=tommi@webrtc.org,sprang@webrtc.org,stefan@webrtc.org,nisse@webrtc.org,mfl...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7420
==========

to

==========
Revert of Add content type information to encoded images and corresponding rtp
extension header (patchset #1 id:1 of https://codereview.webrtc.org/2811963002/
)

Reason for revert:
Relanded by mistake.

Original issue's description:
> Reland of Add content type information to encoded images and corresponding rtp
extension header (patchset #1 id:1 of https://codereview.webrtc.org/2816463002/
)
> 
> Reason for revert:
> Reland with fixes which break API
> 
> Original issue's description:
> > Revert of Add content type information to encoded images and corresponding
rtp extension header (patchset #31 id:600001 of
https://codereview.webrtc.org/2772033002/ )
> > 
> > Reason for revert:
> > Breaks dependent projects.
> > 
> > Original issue's description:
> > > Add content type information to Encoded Images and add corresponding RTP
extension header.
> > > Use it to separate UMA e2e delay metric between screenshare from video.
> > > Content type extension is set based on encoder settings and processed and
decoders.
> > > 
> > > Also,
> > > Fix full-stack-tests to calculate RTT correctly, so new metric could be
tested.
> > > 
> > > BUG=webrtc:7420
> > > 
> > > Review-Url: https://codereview.webrtc.org/2772033002
> > > Cr-Commit-Position: refs/heads/master@{#17640}
> > > Committed:
https://chromium.googlesource.com/external/webrtc/+/64e739aeae5629cbbebf2a19e...
> > 
> >
TBR=tommi@webrtc.org,sprang@webrtc.org,stefan@webrtc.org,nisse@webrtc.org,mfl...
> > # Skipping CQ checks because original CL landed less than 1 days ago.
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> > BUG=webrtc:7420
> > 
> > Review-Url: https://codereview.webrtc.org/2816463002
> > Cr-Commit-Position: refs/heads/master@{#17644}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/57218668083fce36a55efb8c8...
> 
>
TBR=tommi@webrtc.org,sprang@webrtc.org,stefan@webrtc.org,nisse@webrtc.org,mfl...
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:7420
> 
> Review-Url: https://codereview.webrtc.org/2811963002
> Cr-Commit-Position: refs/heads/master@{#17645}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/4fa0c4f97fec5fd7d52ed505a...

TBR=tommi@webrtc.org,sprang@webrtc.org,stefan@webrtc.org,nisse@webrtc.org,mfl...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7420

Review-Url: https://codereview.webrtc.org/2810923004
Cr-Commit-Position: refs/heads/master@{#17648}
Committed:
https://chromium.googlesource.com/external/webrtc/+/29dbb1992a5722ab26bc7c0d4...
==========

[commit-bot: I haz the power, 2017-04-11 11:49:11]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/29dbb1992a5722ab26bc7c0d4...