Roll Open Screen from a8cdc94e138d to d975e29d1e93 (1 revision)

https://chromium.googlesource.com/openscreen.git/+log/a8cdc94e138d..d975e29d1e93

2020-10-21 jophba@chromium.org Add SessionMessager class

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: I91be3fccdcf759851cad1ded01d4fae53decf3e1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2490485Reviewed-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@{#819680}

DEPS

@@ -1248,7 +1248,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/cisco/openh264' + '@' + '3dd5b80bc4f172dd82925bb259cb7c82348409c5',
 
   'src/third_party/openscreen/src':
-    Var('chromium_git') + '/openscreen' + '@' + 'a8cdc94e138d9c4ce2157c30c222a9e12f08ec63',
+    Var('chromium_git') + '/openscreen' + '@' + 'd975e29d1e934b21ebfc9dd4fbaebecab167f986',
 
   'src/third_party/openxr/src': {
     'url': Var('chromium_git') + '/external/github.com/KhronosGroup/OpenXR-SDK' + '@' + '97cfe495bb7a3853266b646d1c79e169387f9c7a',