Roll WebRTC from 8d3396dabec9 to 13dac0c26885 (4 revisions)

https://webrtc.googlesource.com/src.git/+log/8d3396dabec9..13dac0c26885

2021-06-13 webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com Update WebRTC code version (2021-06-13T04:02:18).
2021-06-11 danilchap@webrtc.org Make stopping of the RepeatingTask safer
2021-06-11 hta@webrtc.org Make JsepTransportCollection self-managing for transports
2021-06-11 chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com Roll chromium_revision d2f297f..8907aac (890623:891631)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/webrtc-chromium-autoroll
Please CC webrtc-chromium-sheriffs-robots@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Bug: None
Tbr: webrtc-chromium-sheriffs-robots@google.com
Change-Id: I23322482010b4b1d3ef2cf5842d730b08979ca5d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2958774
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#891937}

DEPS

@@ -1584,7 +1584,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/gpuweb/cts.git' + '@' + '8ab02d2228c649ba0e581f846a44674d1fb59ef1',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '8d3396dabec999c58c52617655be2ef97402d88f',
+    Var('webrtc_git') + '/src.git' + '@' + '13dac0c268854cfb0c0526b91298e74c77cc81ce',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),