Ensure one does not register same rtp header extension with different id

Ensure one does not register same rtp header extension with different id
Added assert to RtpHeaderExtensionMap
Altered tests that did.

BUG=webrtc:1994
Committed: https://crrev.com/42ca68ab7264154e16291c99f1de7338abc56af7
Cr-Commit-Position: refs/heads/master@{#14840}

[danilchap, 2016-10-28 14:19:21]

Description was changed from

==========
Ensure one do not register same rtp header extension with different id
Added assert to RtpHeaderExtensionMap
Altered tests that did.

BUG=webrtc:1994
==========

to

==========
Ensure one does not register same rtp header extension with different id
Added assert to RtpHeaderExtensionMap
Altered tests that did.

BUG=webrtc:1994
==========

[danilchap, 2016-10-28 15:13:12]

danilchap@webrtc.org changed reviewers:
+ stefan@webrtc.org

[stefan-webrtc, 2016-10-31 09:20:57]

lgtm

[danilchap, 2016-10-31 09:28:23]

The CQ bit was checked by danilchap@webrtc.org

[commit-bot: I haz the power, 2016-10-31 09:28:26]

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, 2016-10-31 10:34:42]

Description was changed from

==========
Ensure one does not register same rtp header extension with different id
Added assert to RtpHeaderExtensionMap
Altered tests that did.

BUG=webrtc:1994
==========

to

==========
Ensure one does not register same rtp header extension with different id
Added assert to RtpHeaderExtensionMap
Altered tests that did.

BUG=webrtc:1994
==========

[commit-bot: I haz the power, 2016-10-31 10:34:43]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-31 10:34:52]

Description was changed from

==========
Ensure one does not register same rtp header extension with different id
Added assert to RtpHeaderExtensionMap
Altered tests that did.

BUG=webrtc:1994
==========

to

==========
Ensure one does not register same rtp header extension with different id
Added assert to RtpHeaderExtensionMap
Altered tests that did.

BUG=webrtc:1994

Committed: https://crrev.com/42ca68ab7264154e16291c99f1de7338abc56af7
Cr-Commit-Position: refs/heads/master@{#14840}
==========

[commit-bot: I haz the power, 2016-10-31 10:34:53]

Patchset 1 (id:??) landed as
https://crrev.com/42ca68ab7264154e16291c99f1de7338abc56af7
Cr-Commit-Position: refs/heads/master@{#14840}