Roll src/third_party/webrtc c77df78931bc..0cd61b6e287c (3 commits)

https://webrtc.googlesource.com/src.git/+log/c77df78931bc..0cd61b6e287c

git log c77df78931bc..0cd61b6e287c --date=short --no-merges --format='%ad %ae %s'
2019-09-10 asapersson@webrtc.org MultiCodecReceiveTest: fix for flaky test.
2019-09-10 titovartem@webrtc.org Add ability to provide TEXT hint only when requested in PC framework
2019-09-10 nisse@webrtc.org Add empty build target modules/video_coding:video_coding_legacy

Created with:
  gclient setdep -r src/third_party/webrtc@0cd61b6e287c

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: None
Change-Id: Id890a85b808794cf240b2d391abcacc9aa39d525
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1795082Reviewed-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@{#695098}

DEPS

@@ -1414,7 +1414,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + 'abaae129d9a0c6e1e092067e0b105475df43352e',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + 'c77df78931bca91f3e35343b038ba4ad986b1ab4',
+    Var('webrtc_git') + '/src.git' + '@' + '0cd61b6e287c156d6189490d64842dfdfcaa524a',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',