Roll src/third_party/webrtc 05c47926ff71..9cdc9cc1c48d (4 commits)

https://webrtc.googlesource.com/src.git/+log/05c47926ff71..9cdc9cc1c48d

git log 05c47926ff71..9cdc9cc1c48d --date=short --no-merges --format='%ad %ae %s'
2019-10-29 sprang@webrtc.org Cleanup of deprecated RTPSender code
2019-10-29 gustaf@webrtc.org Remove deprecated Audio Processing APIs
2019-10-29 yura.yaroshevich@gmail.com Fixed MSAN issue with usrsctp reliability test.
2019-10-29 danilchap@webrtc.org Detach H264 sps pps tracker from VCMPacket

Created with:
  gclient setdep -r src/third_party/webrtc@9cdc9cc1c48d

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: If232afd3fa7405b885ec6b2d7987a0322a417621
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1886355Reviewed-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@{#710318}

DEPS

@@ -1507,7 +1507,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '69e333c1d61c04d5ddebdd26380ee5c64a71d4b0',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '05c47926ff71e6fe01d856aaf7888d8012252183',
+    Var('webrtc_git') + '/src.git' + '@' + '9cdc9cc1c48d6de2e13623156d5b53e107964c88',
 
   # Wuffs' canonical repository is at github.com/google/wuffs, but we use
   # Skia's mirror of Wuffs, the same as in upstream Skia's DEPS file.