WPT import https://crrev.com/c/1073077 introduced new failures in external/wpt/webrtc:

List of new failures:
external/wpt/webrtc/RTCPeerConnection-getIdentityAssertion.sub.html new failing tests: https://crrev.com/c/1073077/4/third_party/WebKit/LayoutTests/external/wpt/webrtc/RTCPeerConnection-getIdentityAssertion.sub-expected.txt

This import contains upstream changes from 9a0e2df3fa01fe3b905e33443d1d7a409aa875a2 to ca8f405403de184b168b6bbdbba1d24504f4afd9:
[csp] Parameterize port references: https://github.com/w3c/web-platform-tests/commit/ca8f405403de184b168b6bbdbba1d24504f4afd9
Parameterize domain references: https://github.com/w3c/web-platform-tests/commit/ad2e6b7a5a3049bfcdfdd186fb5bf922c3506bf9 [affecting this directory]
Cleanup plugin element frames when the layout tree is detached: https://github.com/w3c/web-platform-tests/commit/3391fa43ca730a80b6939476086fafd9ec884ff1
Refactor :focus-visible implementation: https://github.com/w3c/web-platform-tests/commit/5057b3cee61ca468cd4e8247ea59f5c7d323aa82