Roll src/third_party/webrtc 199295882d87..fb8c856afa8f (4 commits)

https://webrtc.googlesource.com/src.git/+log/199295882d87..fb8c856afa8f


git log 199295882d87..fb8c856afa8f --date=short --no-merges --format='%ad %ae %s'
2019-05-10 nisse@webrtc.org Revert "Change SimpleStringBuilder::Append to not use strcpyn and SIZE_UNKNOWN"
2019-05-10 eladalon@webrtc.org Reland "Rename configurations_ to vpx_configs_ in LibvpxVp8Encoder"
2019-05-10 chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com Roll chromium_revision 5f38b3b2..def6b1e7 (658382:658489)
2019-05-10 nisse@webrtc.org Move kRtpCsrcSize from common_types.h to rtp_headers.h


Created with:
  gclient setdep -r src/third_party/webrtc@fb8c856afa8f

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.



BUG=chromium:961253,chromium:None
TBR=webrtc-chromium-sheriffs-robots@google.com

Change-Id: Ic23c890a324a3210b060109b9ae949b1bad9febe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1605211Reviewed-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@{#658534}

DEPS

@@ -1348,7 +1348,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '6f0b34abee8dba611c253738d955c59f703c147a',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '199295882d87072d503ac8b24e293be37b4a4d37',
+    Var('webrtc_git') + '/src.git' + '@' + 'fb8c856afa8f9cd0937a5b124e8cddad33b3d3ce',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',