Roll src/third_party/webrtc a22cab8a6532..2e6c294dba63 (2 commits)

https://webrtc.googlesource.com/src.git/+log/a22cab8a6532..2e6c294dba63

git log a22cab8a6532..2e6c294dba63 --date=short --no-merges --format='%ad %ae %s'
2019-08-06 titovartem@google.com Refactor test_peer.cc to reduce amount of arguments passing around
2019-08-06 tommi@webrtc.org Fix CallClient so that it calls Call::GetStats() on the right thread.

Created with:
  gclient setdep -r src/third_party/webrtc@2e6c294dba63

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: None
Change-Id: I8ed742a4c3fbd3a502b13013c32c2c2a8382f2ae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1738989Reviewed-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@{#684324}

DEPS

@@ -1375,7 +1375,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + 'abaae129d9a0c6e1e092067e0b105475df43352e',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + 'a22cab8a65324bc84a46f229cf9a75e484f9d3a4',
+    Var('webrtc_git') + '/src.git' + '@' + '2e6c294dba636fb92503dd08a07c0bf53f170659',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',