Roll Open Screen from 052885405c6c to 71d32ad4b83a (2 revisions)

https://chromium.googlesource.com/openscreen.git/+log/052885405c6c..71d32ad4b83a

2020-11-13 rwkeane@google.com Fix Bug in Cast Core Proto
2020-11-13 shawnq@google.com Internal change

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/openscreen-chromium
Please CC jophba@chromium.org 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: jophba@chromium.org
Change-Id: I050839ee39d165100921d3edf3386f031eaffa98
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536895Reviewed-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@{#827151}

DEPS

@@ -1246,7 +1246,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/cisco/openh264' + '@' + '3dd5b80bc4f172dd82925bb259cb7c82348409c5',
 
   'src/third_party/openscreen/src':
-    Var('chromium_git') + '/openscreen' + '@' + '052885405c6c9b71666031281c83b5234dd7120f',
+    Var('chromium_git') + '/openscreen' + '@' + '71d32ad4b83a339f42fd2c2c26758f5c9d5978f5',
 
   'src/third_party/openxr/src': {
     'url': Var('chromium_git') + '/external/github.com/KhronosGroup/OpenXR-SDK' + '@' + '97cfe495bb7a3853266b646d1c79e169387f9c7a',