Roll WebRTC from 4681cecb4151 to 1607b3aa8ccd (1 revision)

https://webrtc.googlesource.com/src.git/+log/4681cecb4151..1607b3aa8ccd

2021-01-08 webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com Update WebRTC code version (2021-01-08T04:02:26).

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: I1538678ee6d16803fd26f736adb9b612193dd1f8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2616924Reviewed-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@{#841440}

DEPS

@@ -1518,7 +1518,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/gpuweb/cts.git' + '@' + '3c2fe3888658d82b47ca831d59a2e07579619c2d',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '4681cecb415194e5e0852a12f083f2fcef0b6497',
+    Var('webrtc_git') + '/src.git' + '@' + '1607b3aa8ccd55e48e2fc0204ee5cbe873d41928',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),