Roll src/third_party/webrtc 2af35ab984e3..ef93a2618066 (1 commits)

https://webrtc.googlesource.com/src.git/+log/2af35ab984e3..ef93a2618066

git log 2af35ab984e3..ef93a2618066 --date=short --first-parent --format='%ad %ae %s'
2020-05-18 handellm@webrtc.org RtpVideoStreamReceiver::RtcpFeedbackBuffer: remove lock recursions.

Created with:
  gclient setdep -r src/third_party/webrtc@ef93a2618066

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: None
Tbr: webrtc-chromium-sheriffs-robots@google.com
Change-Id: I9578ca2de72d65de9f81faa1eaa864e5c6d744b6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2208199Reviewed-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@{#769954}

DEPS

@@ -1453,7 +1453,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '2af35ab984e3d62ff7abb215dc293fc082de19f6',
+    Var('webrtc_git') + '/src.git' + '@' + 'ef93a26180660eaed00571996bb8e530be89320c',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),