Roll src/third_party/webrtc d63f8f88a1b0..30c2b66fbabe (3 commits)

https://webrtc.googlesource.com/src.git/+log/d63f8f88a1b0..30c2b66fbabe

git log d63f8f88a1b0..30c2b66fbabe --date=short --no-merges --format='%ad %ae %s'
2019-09-25 chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com Roll chromium_revision edf70056..489dde9b (699748:699869)
2019-09-25 danilchap@webrtc.org Implement TaskQueueBase interface by SingleThreadedTaskQueueForTesting
2019-09-25 srte@webrtc.org Cleanup of unused field trials and options in SendSideBandwidthEstimation

Created with:
  gclient setdep -r src/third_party/webrtc@30c2b66fbabe

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: chromium:None
Change-Id: I145c12b7e8bfd1b5850f5e87f0a7ac408bdd3a1b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1825863Reviewed-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@{#700002}

DEPS

@@ -1425,7 +1425,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '7c4e67ff117d6c640e6dd17989afe2fb7da7eecb',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + 'd63f8f88a1b0bc5129f111b440ee294947ba98b1',
+    Var('webrtc_git') + '/src.git' + '@' + '30c2b66fbabe466ea46e781128bc36f0c8d623df',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',