Roll WebRTC from 1f7eab68c0ce to 1253aea08e5f (1 revision)

https://webrtc.googlesource.com/src.git/+log/1f7eab68c0ce..1253aea08e5f

2020-10-19 mbonadei@webrtc.org Revert "Reland "Remove placeholder Obj-C headers and use angle-bracketed headers.""

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: I6c116a8e936e7fb25942e47a133f3b7d2de672d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2484310Reviewed-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@{#818435}

DEPS

@@ -1497,7 +1497,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '1f7eab68c0ce267b935f9ea3544d3105d7fd19dc',
+    Var('webrtc_git') + '/src.git' + '@' + '1253aea08e5f78c455dd5e40a53ed2b6f72a98aa',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),