Roll src/third_party/webrtc 6558fa5d64c4..4869bd6309bb (2 commits)

https://webrtc.googlesource.com/src.git/+log/6558fa5d64c4..4869bd6309bb

git log 6558fa5d64c4..4869bd6309bb --date=short --no-merges --format='%ad %ae %s'
2019-08-26 asapersson@webrtc.org Add method CanAdaptUp based on bitrate to BalancedDegradationSettings.
2019-08-26 sprang@webrtc.org Removes deprecated InsertPacket/TimeToSendPacket/TimeToSendPadding

Created with:
  gclient setdep -r src/third_party/webrtc@4869bd6309bb

The AutoRoll server is located here: https://autoroll.skia.org/r/webrtc-chromium-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


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

Bug: chromium:none
Change-Id: I869bf5990d94545241b7708ce33cfd913b66f166
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1771544Reviewed-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@{#690380}

DEPS

@@ -1406,7 +1406,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + 'abaae129d9a0c6e1e092067e0b105475df43352e',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '6558fa5d64c4d913f4b3ac863c2670e865dbeda6',
+    Var('webrtc_git') + '/src.git' + '@' + '4869bd6309bbe2e9e038451e9549f5a9d12e4a38',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',