Roll src/third_party/webrtc f69bd5f184cc..b689af4c995e (5 commits)

https://webrtc.googlesource.com/src.git/+log/f69bd5f184cc..b689af4c995e

git log f69bd5f184cc..b689af4c995e --date=short --no-merges --format='%ad %ae %s'
2019-08-21 mellem@webrtc.org Changes to enable use of DatagramTransport as a data channel transport.
2019-08-21 steveanton@webrtc.org Revert "Simplification and refactoring of the AudioBuffer code"
2019-08-21 sprang@webrtc.org Remove WebRTC-Pacer-LegacyPacketReferencing flag and most usage
2019-08-21 peah@webrtc.org Process 8 kHz audio as 16 kHz internally of the audio processing module
2019-08-21 peah@webrtc.org Simplification and refactoring of the AudioBuffer code

Created with:
  gclient setdep -r src/third_party/webrtc@b689af4c995e

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: None
Change-Id: Idbc9ba0c8e28fca2f041fe5bb599f551d7c0d507
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1764457Reviewed-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@{#689210}

DEPS

@@ -1391,7 +1391,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + 'abaae129d9a0c6e1e092067e0b105475df43352e',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + 'f69bd5f184ccb7169be5237ec956887ca48af6a3',
+    Var('webrtc_git') + '/src.git' + '@' + 'b689af4c995e3c96465746c470dca82c1cdece63',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',