Roll src/third_party/webrtc ba9e1b8b75f3..620bed1c71a4 (1 commits)

https://webrtc.googlesource.com/src.git/+log/ba9e1b8b75f3..620bed1c71a4

git log ba9e1b8b75f3..620bed1c71a4 --date=short --first-parent --format='%ad %ae %s'
2020-03-17 phoglund@webrtc.org Remove allbins and story hacks, fix -Infinity.

Created with:
  gclient setdep -r src/third_party/webrtc@620bed1c71a4

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/+/master/autoroll/README.md

Bug: chromium:1029452
Tbr: webrtc-chromium-sheriffs-robots@google.com
Change-Id: I85e1104db3e3486f42433223c70ca1bb8c292cdd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2107319Reviewed-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@{#750946}

DEPS

@@ -1459,7 +1459,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/gpuweb/cts.git' + '@' + '84ee597cdeae08bb26e578fc66a35bcf35f633f4',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + 'ba9e1b8b75f356eedd2972d95e20bb102779b957',
+    Var('webrtc_git') + '/src.git' + '@' + '620bed1c71a4ce42bb00307a416e54e5a2c62ad1',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),