Roll WebRTC from 81d691852dc8 to 3a5612a8de0b (5 revisions)

https://webrtc.googlesource.com/src.git/+log/81d691852dc8..3a5612a8de0b

2020-09-23 mheikal@chromium.org Clean up references to deprecated create_srcjar in android_resources
2020-09-23 nisse@webrtc.org Demote method EncodedImage::capacity() to private.
2020-09-23 chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com Roll chromium_revision 590f451b..dc725cd5 (809630:809732)
2020-09-23 nisse@webrtc.org Deprecate the raw-pointer constructor of EncodedImage.
2020-09-23 ilnik@webrtc.org Remove deprecated i420 buffer pool

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: chromium:1073476
Tbr: webrtc-chromium-sheriffs-robots@google.com
Change-Id: I884b526069ff6fcda18a73a5be748762b2d9dadc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2426808Reviewed-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@{#809906}

DEPS

@@ -1486,7 +1486,7 @@ deps = {
   },
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '81d691852dc8653adccd4e067e4731e8384c34b8',
+    Var('webrtc_git') + '/src.git' + '@' + '3a5612a8de0b776f6152e04d96f850bfc511765e',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),