Roll src/third_party/libsrtp/ 502e81a23..b8dd754b4 (2 commits).

Roll src/third_party/libsrtp/ 502e81a23..b8dd754b4 (2 commits).

https://chromium.googlesource.com/chromium/deps/libsrtp.git/+log/502e81a238a8..b8dd754b4fa0

$ git log 502e81a23..b8dd754b4 --date=short --no-merges --format='%ad %ae %s'
2015-11-18 jiayl Update libsrtp to upstream commit be95365fbb4788b688cab7af61c65b7989055fb4
2015-08-25 jiayl Set "use_openssl" gyp variable to 1 if it is undefined

This CL updates libsrtp 1.5.x to the latest upstream commit in the
"1_5_x_throttle" branch.

Notable changes:
- Increase maximum tag length to 16 bytes to allow for GCM cipher suite.
- Prevent potential DoS attack due to lack of bounds checking on RTP header
  CSRC count and extension header length. Credit goes to Randell Jesup and
  the Firefox team for reporting this issue.

Committed: https://crrev.com/1b64adc3724092af5a37f3eb169de1e783ccf47d
Cr-Commit-Position: refs/heads/master@{#360613}

[joachim, 2015-11-18 23:26:36]

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

[joachim, 2015-11-18 23:26:36]

Ptal

[tommi (sloooow) - chröme, 2015-11-19 14:20:54]

tommi@chromium.org changed reviewers:
+ phoglund@webrtc.org

[tommi (sloooow) - chröme, 2015-11-19 14:20:54]

Patrik - can you take a look?

[phoglund_chromium, 2015-11-19 14:55:06]

phoglund@chromium.org changed reviewers:
+ phoglund@chromium.org

[phoglund_chromium, 2015-11-19 14:55:07]

I did take a look at the libsrtp code and I think the changes look reasonable,
not really sure how qualified I am to review this stuff. Anyway, lgtm

[tommi (sloooow) - chröme, 2015-11-19 15:05:16]

The CQ bit was checked by tommi@chromium.org

[tommi (sloooow) - chröme, 2015-11-19 15:05:16]

lgtm

[commit-bot: I haz the power, 2015-11-19 15:06:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1457903002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1457903002/1

[commit-bot: I haz the power, 2015-11-19 15:25:17]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-11-19 15:25:18]

Try jobs failed on following builders:
  linux_android_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_android_r...)

[joachim, 2015-11-19 16:10:58]

The CQ bit was checked by jbauch@webrtc.org

[commit-bot: I haz the power, 2015-11-19 16:11:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1457903002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1457903002/1

[commit-bot: I haz the power, 2015-11-19 17:24:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-19 17:25:20]

Patchset 1 (id:??) landed as
https://crrev.com/1b64adc3724092af5a37f3eb169de1e783ccf47d
Cr-Commit-Position: refs/heads/master@{#360613}