Roll Open Screen from ec44eb332577 to dd945dd1c033 (3 revisions)

https://chromium.googlesource.com/openscreen.git/+log/ec44eb332577..dd945dd1c033

2020-06-19 rwkeane@google.com Discovery: Add support for non-cyclic SRV pointers
2020-06-19 rwkeane@google.com DNS-SD: Update DnsDataGraph
2020-06-19 rwkeane@google.com Discovery: Add support for subtypes to the public headers

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: I017657733b50b9d8e899d62bd8754edb8b8aa5cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2253233Reviewed-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@{#780194}

DEPS

@@ -1207,7 +1207,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/cisco/openh264' + '@' + 'a5473711f3e20c6bd1c33d81b6c7b9a0618aa18f',
 
   'src/third_party/openscreen/src':
-    Var('chromium_git') + '/openscreen' + '@' + 'ec44eb332577b1f3b8865fe78abec5c05c7727bf',
+    Var('chromium_git') + '/openscreen' + '@' + 'dd945dd1c033e9d46b4fa0616cd7413d65e320eb',
 
   'src/third_party/openxr/src': {
     'url': Var('chromium_git') + '/external/github.com/KhronosGroup/OpenXR-SDK' + '@' + '9e97b73e7dd2bfc07745489d728f6a36665c648f',