Fix wrong endianness in RTCP tag calculation for AEAD/GCM.

Fix wrong endianness in RTCP tag calculation for AEAD/GCM.

The sequence number was used as little-endian when the RTCP tag was
calculated which is wrong according to RFC 7714.

This was fixed upstream in https://github.com/cisco/libsrtp/commit/da852b0c253f6494bd70ae254808669acea9ea63
See https://github.com/cisco/libsrtp/issues/137 for details.

BUG=webrtc:5222
R=pthatcher@webrtc.org

Committed: https://chromium.googlesource.com/chromium/deps/libsrtp/+/8cee0ffa9c017256c02cf9088867f92f6225ed09

[joachim, 2016-01-18 19:59:42]

jbauch@webrtc.org changed reviewers:
+ juberti@chromium.org

[joachim, 2016-01-18 19:59:43]

Ptal, here is another libsrtp fix that will be necessary once we support GCM
ciphers in WebRTC.

[pthatcher1, 2016-03-08 22:53:32]

pthatcher@webrtc.org changed reviewers:
+ pthatcher@webrtc.org

[pthatcher1, 2016-03-08 22:53:32]

lgtm

[joachim, 2016-03-09 14:07:53]

Description was changed from

==========
Fix wrong endianness in RTCP tag calculation for AEAD/GCM.

The sequence number was used as little-endian when the RTCP tag was
calculated which is wrong according to RFC 7714.

This was fixed upstream in
https://github.com/cisco/libsrtp/commit/da852b0c253f6494bd70ae254808669acea9ea63
See https://github.com/cisco/libsrtp/issues/137 for details.

BUG=
==========

to

==========
Fix wrong endianness in RTCP tag calculation for AEAD/GCM.

The sequence number was used as little-endian when the RTCP tag was
calculated which is wrong according to RFC 7714.

This was fixed upstream in
https://github.com/cisco/libsrtp/commit/da852b0c253f6494bd70ae254808669acea9ea63
See https://github.com/cisco/libsrtp/issues/137 for details.

BUG=webrtc:5222
==========

[joachim, 2016-03-09 14:11:34]

On 2016/03/08 22:53:32, pthatcher1 wrote:
> lgtm

Thanks. Is there a way to get a @chromium.org account so I can land the CL
myself, or should I ask somebody to land it for me? (jiayl@ did that in the past
for my libsrtp changes)

[jiayl, 2016-03-09 20:33:37]

Description was changed from

==========
Fix wrong endianness in RTCP tag calculation for AEAD/GCM.

The sequence number was used as little-endian when the RTCP tag was
calculated which is wrong according to RFC 7714.

This was fixed upstream in
https://github.com/cisco/libsrtp/commit/da852b0c253f6494bd70ae254808669acea9ea63
See https://github.com/cisco/libsrtp/issues/137 for details.

BUG=webrtc:5222
==========

to

==========
Fix wrong endianness in RTCP tag calculation for AEAD/GCM.

The sequence number was used as little-endian when the RTCP tag was
calculated which is wrong according to RFC 7714.

This was fixed upstream in
https://github.com/cisco/libsrtp/commit/da852b0c253f6494bd70ae254808669acea9ea63
See https://github.com/cisco/libsrtp/issues/137 for details.

BUG=webrtc:5222
R=pthatcher@webrtc.org

Committed:
https://chromium.googlesource.com/chromium/deps/libsrtp/+/8cee0ffa9c017256c02...
==========

[jiayl, 2016-03-09 20:33:38]

Committed patchset #1 (id:1) manually as
8cee0ffa9c017256c02cf9088867f92f6225ed09 (presubmit successful).