Roll src/third_party/webrtc 3663ed3ad678..82a3f0ad7f2b (3 commits)

https://webrtc.googlesource.com/src.git/+log/3663ed3ad678..82a3f0ad7f2b

git log 3663ed3ad678..82a3f0ad7f2b --date=short --no-merges --format='%ad %ae %s'
2019-10-21 danilchap@webrtc.org Replace SingleThreadedTaskQueueForTesting::SendTask usage with ::webrtc::SendTask
2019-10-21 danilchap@webrtc.org Stop using gtest internal macro GTEST_ARRAY_SIZE_
2019-10-21 chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com Roll chromium_revision db43fd36..8587b26e (707597:707701)

Created with:
  gclient setdep -r src/third_party/webrtc@82a3f0ad7f2b

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/+/master/autoroll/README.md

TBR=webrtc-chromium-sheriffs-robots@google.com

Bug: chromium:None,chromium:None
Change-Id: Ica8c70dc84a6d47000cc6e56e9a92b4b06a0ba1e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1871929Reviewed-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@{#707765}

DEPS

@@ -1477,7 +1477,7 @@ deps = {
     Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '2701c130839edbeb226735b0775966b6423d9e83',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '3663ed3ad67893746efd86267a936a7295031ab1',
+    Var('webrtc_git') + '/src.git' + '@' + '82a3f0ad7f2b3420d01d80b010b2410b0007b845',
 
   'src/third_party/xdg-utils': {
       'url': Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',