Roll WebRTC from 118d01ac35ad to 39adce149810 (1 revision)

https://webrtc.googlesource.com/src.git/+log/118d01ac35ad..39adce149810

2020-06-25 jakobi@webrtc.org Add RtpEncodingParameters.adaptive_ptime.

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: chromium:1086942
Tbr: webrtc-chromium-sheriffs-robots@google.com
Change-Id: I87cadd984ed06017a43e8d57526c679eaff8892e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2267413Reviewed-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@{#782572}

DEPS

@@ -1458,7 +1458,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '118d01ac35adcf4d1efb5d225f9d85d857115c0b',
+    Var('webrtc_git') + '/src.git' + '@' + '39adce149810089db056e35adeaa8a4d0d3e8a35',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),