Roll src/third_party/webrtc 4d3f93f34813..8f47b27268ea (2 commits)

https://webrtc.googlesource.com/src.git/+log/4d3f93f34813..8f47b27268ea

git log 4d3f93f34813..8f47b27268ea --date=short --first-parent --format='%ad %ae %s'
2020-03-11 phoglund@webrtc.org Partial revert: "Hand protos directly to histograms and fix summary."
2020-03-11 titovartem@google.com Fix: don't use recovered packets in UlpFEC recovery

Created with:
  gclient setdep -r src/third_party/webrtc@8f47b27268ea

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: I333357a9fc34df424a61d8ec5a616434b55f5c34
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2098243Reviewed-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@{#749257}

DEPS

@@ -1454,7 +1454,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/gpuweb/cts.git' + '@' + 'ec18cc3262922e7dcdbe70243c6f40606f979144',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '4d3f93f348136b6cbad827124be4cedf5794aab3',
+    Var('webrtc_git') + '/src.git' + '@' + '8f47b27268ea52848fe30447a716573299e574ca',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),