Import wpt@91c750392d5c6304e91f6d4248cfa5fbbcbc022d

Using wpt-import in Chromium bf6e7836.
With Chromium commits locally applied on WPT:
c15c1083 "Add test that datachannels close when connection does."


Note to sheriffs: This CL imports external tests and adds
expectations for those tests; if this CL is large and causes
a few new failures, please fix the failures by adding new
lines to TestExpectations rather than reverting. See:
https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md

NOAUTOREVERT=true
TBR=robertma

No-Export: true
Change-Id: Ib5e78d0eaca596ecaf8d04d5f50552c15901aced
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1981098Reviewed-by: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#727777}

third_party/blink/web_tests/external/wpt/interfaces/webrtc.idl

@@ -13,7 +13,7 @@ dictionary RTCConfiguration {
 };
 
 enum RTCIceCredentialType {
-  "password",
+  "password"
 };
 
 dictionary RTCIceServer {