Roll WebRTC from d96634781e53 to c5fd74567279 (2 revisions)

https://webrtc.googlesource.com/src.git/+log/d96634781e53..c5fd74567279

2020-11-22 tommi@webrtc.org Remove AsyncInvoker dependency from P2PTransportChannel
2020-11-22 tommi@webrtc.org Remove dependency on MessageHandlerAutoCleanup from BasicPortAllocatorSession and AllocationSequence

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: I276b8935499524c6ace1fe7c66ce2b7be08a9b56
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2554027Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#830058}

DEPS

@@ -1551,7 +1551,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + 'd96634781e537685496ce6e207bf41b4a98de492',
+    Var('webrtc_git') + '/src.git' + '@' + 'c5fd745672798221b71611a92c33ab5f2bf04a3b',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),