Roll src/third_party/webrtc/ 8b64fd8a8..8d9c5406c (4 commits)

https://webrtc.googlesource.com/src.git/+log/8b64fd8a85c1..8d9c5406c7ba

$ git log 8b64fd8a8..8d9c5406c --date=short --no-merges --format='%ad %ae %s'

Created with:
  roll-dep src/third_party/webrtc


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

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.


CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_archive_rel_ng;master.tryserver.chromium.mac:mac_chromium_archive_rel_ng
TBR=webrtc-chromium-sheriffs-robots@google.com

Change-Id: I69affadf2b7890f11fdc4995249ec2bb97637d64
Reviewed-on: https://chromium-review.googlesource.com/775318Reviewed-by: WebRTC Roll Bot <webrtc-autoroll@chromium.org>
Commit-Queue: WebRTC Roll Bot <webrtc-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517150}

DEPS

@@ -624,7 +624,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '12192b948daa2d83269ab46cbf03d65e9f2a48a3',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '8b64fd8a85c146a2defd7dc1e78ea349c877f92e', # commit position 20628
+    Var('webrtc_git') + '/src.git' + '@' + '8d9c5406c7ba841551e927639f18a1af4f45377d', # commit position 20628
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',