Roll WebRTC from 17a165467087 to 9642d3ae12e4 (2 revisions)

https://webrtc.googlesource.com/src.git/+log/17a165467087..9642d3ae12e4

2020-08-12 chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com Roll chromium_revision e697f4f1..54b8c1d0 (797077:797178)
2020-08-12 danilchap@webrtc.org Use non-deprecated EncodedImageCallback::OnEncodedImage in rtc_tools

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: Ic41ef82be2bfec2153a31772c07ffba0e622480a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2352354Reviewed-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@{#797254}

DEPS

@@ -1470,7 +1470,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '17a1654670870bf9e30d05d5c39942e0982c5223',
+    Var('webrtc_git') + '/src.git' + '@' + '9642d3ae12e489636221af734ac4bccdb385c99f',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),