Roll WebRTC from 5184219b6ff4 to f7721fb24619 (2 revisions)

https://webrtc.googlesource.com/src.git/+log/5184219b6ff4..f7721fb24619

2020-08-07 jonaso@webrtc.org Add interface for os/firmware to affect ICE selection.
2020-08-07 razvans@google.com Added field trials to disable video resizing

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: I9086641eb876fc06bb6bd82b20454d9a7b9aa048
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2343056Reviewed-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@{#795964}

DEPS

@@ -1465,7 +1465,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '5184219b6ff46b8bdb432c9fe307ec762ec2119b',
+    Var('webrtc_git') + '/src.git' + '@' + 'f7721fb24619d2cae980f6e2183c0f77f0a2c432',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),