Roll WebRTC from 876a3dc88ac4 to bcdfc8975ea2 (2 revisions)

https://webrtc.googlesource.com/src.git/+log/876a3dc88ac4..bcdfc8975ea2

2020-08-19 terelius@webrtc.org Group decoded frame events by SSRC when compressing RTC event log.
2020-08-19 nisse@webrtc.org Delete CodecInfo::is_hardware_accelerated

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: Ic41a19e53710c7432d7d68416ce1be8304b7f1a3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2364265Reviewed-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@{#799609}

DEPS

@@ -1470,7 +1470,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '876a3dc88ac44768cab57dd6f23c8758bfb6b5bd',
+    Var('webrtc_git') + '/src.git' + '@' + 'bcdfc8975ea28f256f777d841e25f2e749090d96',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),