Roll WebRTC from a0f5e475c56d to 5cc28b0c6a5e (2 revisions)

https://webrtc.googlesource.com/src.git/+log/a0f5e475c56d..5cc28b0c6a5e

2020-06-02 hbos@webrtc.org [Adaptation] Prep Resource for api/ move. Introduce VSE-Resource.
2020-06-02 jianj@google.com Add av1 test running real video clips.

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/+doc/master/autoroll/README.md

Bug: None
Tbr: webrtc-chromium-sheriffs-robots@google.com
Change-Id: Iaab35a129c82fa1b63ad647b4e902f071955a0a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2226597Reviewed-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@{#774092}

DEPS

@@ -1448,7 +1448,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + 'a0f5e475c56d032c4d4b19269e41422afe4a502c',
+    Var('webrtc_git') + '/src.git' + '@' + '5cc28b0c6a5e59a2c81ab8ac2b6439278dee02b0',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),