Sheriff: Skip virtual navigate-iframe-out2in.js tests (2)

This is a follow-up of https://crrev.com/c/3750725.

The following tests are also frequently failing on "Mac10.15 Tests" due
to timeout.

- virtual/plz-dedicated-worker/http/tests/inspector-protocol/network/navigate-iframe-out2in.js
https://ci.chromium.org/ui/p/chromium/builders/try/linux-rel/1065297/test-results?q=virtual%2Fplz-dedicated-worker%2Fhttp%2Ftests%2Finspector-protocol%2Fnetwork%2Fnavigate-iframe-out2in.js+

- virtual/partitioned-cookies-first-party-sets/http/tests/inspector-protocol/network/navigate-iframe-out2in.js
https://ci.chromium.org/ui/p/chromium/builders/ci/Mac10.15%20Tests/27580/overview

Change-Id: Ia9b7888f6e23907b9701d263664ab85e94c28b32
Bug: 1180274
No-try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3750726
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Owners-Override: Hiroki Nakagawa <nhiroki@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1023007}
NOKEYCHECK=True
GitOrigin-RevId: 82da0f7cbd191e93d28061591ff4646277d6e1c8

blink/web_tests/TestExpectations

@@ -7165,8 +7165,8 @@ crbug.com/1342518 [ Mac ] external/wpt/webmessaging/event.data.sub.htm [ Failure
 crbug.com/1342518 [ Win ] external/wpt/webmessaging/event.data.sub.htm [ Failure Pass ]
 
 # Sheriff 2022-07-08
-crbug.com/1180274 virtual/plz-dedicated-worker/http/tests/inspector-protocol/network/navigate-iframe-out2in.js [ Failure Pass ]
-crbug.com/1180274 virtual/partitioned-cookies-first-party-sets/http/tests/inspector-protocol/network/navigate-iframe-out2in.js [ Failure Pass ]
+crbug.com/1180274 virtual/plz-dedicated-worker/http/tests/inspector-protocol/network/navigate-iframe-out2in.js [ Skip ]
+crbug.com/1180274 virtual/partitioned-cookies-first-party-sets/http/tests/inspector-protocol/network/navigate-iframe-out2in.js [ Skip ]
 crbug.com/1180274 virtual/first-party-sets/http/tests/inspector-protocol/network/navigate-iframe-out2in.js [ Skip ]
 crbug.com/1180274 virtual/partitioned-cookies/http/tests/inspector-protocol/network/navigate-iframe-out2in.js [ Skip ]