Roll src/third_party/webrtc 78c82a40409d..f83d0ef0859c (6 commits)

https://webrtc.googlesource.com/src.git/+log/78c82a40409d..f83d0ef0859c

git log 78c82a40409d..f83d0ef0859c --date=short --no-merges --format='%ad %ae %s'
2019-10-04 phoglund@webrtc.org Revert "Remove an old hack from test_main_lib.cc."
2019-10-04 srte@webrtc.org Replacing /target:target with /target in BUILD autofix.
2019-10-04 sprang@webrtc.org Adds support for passing a vector of packets to the paced sender.
2019-10-04 srte@webrtc.org Cleanup of simple TODO(srte) comments.
2019-10-04 phoglund@webrtc.org Remove an old hack from test_main_lib.cc.
2019-10-03 srte@webrtc.org Base overhead calculation for audio priority rate on available data.

Created with:
  gclient setdep -r src/third_party/webrtc@f83d0ef0859c

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/+/master/autoroll/README.md

TBR=webrtc-chromium-sheriffs-robots@google.com

Bug: None
Change-Id: I88909bbe12a74caf5c36ba268bff34ff9ace2cbb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1840712Reviewed-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@{#702838}

DEPS

@@ -1459,7 +1459,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '7c4e67ff117d6c640e6dd17989afe2fb7da7eecb',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '78c82a40409dc147cec33241b8af48115bfdb76f',
+    Var('webrtc_git') + '/src.git' + '@' + 'f83d0ef0859c0183e96790636756a78e0af0056d',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',