Roll src/third_party/webrtc fedd625e0cc6..ad5c4accad00 (2 commits)

https://webrtc.googlesource.com/src.git/+log/fedd625e0cc6..ad5c4accad00

git log fedd625e0cc6..ad5c4accad00 --date=short --no-merges --format='%ad %ae %s'
2019-08-05 srte@webrtc.org Adds PeerConnection scenario test framework.
2019-08-05 asapersson@webrtc.org QualityScaler: Add option to try fast adapt down at start up based on initial bw estimates.

Created with:
  gclient setdep -r src/third_party/webrtc@ad5c4accad00

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: chromium:none
Change-Id: I2fa0da36342295598e1d0a82b4dbba6d33d0e6c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1734760Reviewed-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@{#683970}

DEPS

@@ -1375,7 +1375,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + 'abaae129d9a0c6e1e092067e0b105475df43352e',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + 'fedd625e0cc634a6ae12683e7bf61f6bc01e677d',
+    Var('webrtc_git') + '/src.git' + '@' + 'ad5c4accad00e04de08e2b62d366cc1f8e0320a5',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',