Roll WebRTC from 40e2a6830ac5 to daab6896e293 (4 revisions)

https://webrtc.googlesource.com/src.git/+log/40e2a6830ac5..daab6896e293

2020-11-12 philipp.hancke@googlemail.com doc: port release notes
2020-11-12 natim@webrtc.org Delay VoipCore initialization.
2020-11-12 natim@webrtc.org Name change on channel and channel_id for consistency.
2020-11-12 titovartem@webrtc.org Add support for loopback route on emulated endpoints

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: I1663d5e29e226c77d2bb3ae9c88addb712d9ff4b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2535798Reviewed-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@{#827078}

DEPS

@@ -1506,7 +1506,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '40e2a6830ac5f07b03dafefb014492612f4fb650',
+    Var('webrtc_git') + '/src.git' + '@' + 'daab6896e2938e28f01e305ce2fff038f47554c4',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),