Roll WebRTC from 739cfb2f5857 to 4b5792cc4a19 (1 revision)

https://webrtc.googlesource.com/src.git/+log/739cfb2f5857..4b5792cc4a19

2020-06-30 sprang@webrtc.org Reland "Reland "Removes lock release in PacedSender callback.""

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: Idca19226215d2be4b6a57c425f13851d85d7fc37
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2276008Reviewed-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@{#783931}

DEPS

@@ -1458,7 +1458,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '739cfb2f58577b774d848cc4794d71b8828bd1b1',
+    Var('webrtc_git') + '/src.git' + '@' + '4b5792cc4a19502e46e46a257945c27bf2205055',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),