sheriff: disable...

sheriff: disable http/tests/credentialmanager/credentialscontainer-get-with-virtual-authenticator.html

Test is flaky.

TBR=kenrb@chromium.org

Bug: 1043357
Change-Id: I646f8f1a1391bac4e323462f8729a255244c5fa9
No-try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2010182Reviewed-by: Nina Satragno <nsatragno@chromium.org>
Commit-Queue: Nina Satragno <nsatragno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#733402}

third_party/blink/web_tests/TestExpectations

@@ -6306,3 +6306,6 @@ crbug.com/1042694 fast/forms/form-control-with-state-eager-tracing-crashTest.htm
 crbug.com/1042689 [ Linux ] http/tests/devtools/coverage/gutter-css.js [ Pass Timeout ]
 crbug.com/1042689 [ Win ] http/tests/devtools/coverage/gutter-css.js [ Pass Timeout ]
 crbug.com/1042688 http/tests/devtools/elements/highlight/highlight-dom-updates.js [ Pass Timeout ]
+
+# Sheriff 2020-01-20
+crbug.com/1043357 http/tests/credentialmanager/credentialscontainer-get-with-virtual-authenticator.html [ Pass Timeout Failure ]