Disable DevTools security tests

New CDP event to support localization of DevTools Security panel,
Security.visibleSecurityStateChanged, is checked in [1]. The handler for
this new event is currently behind an experiment [2]. To enable the new
hadnler in DevTools frontend, tests need to be fixed. This CL disables
security tests for now and later CLs will fix tests and re-enable these.

[1]: crrev.com/c/1646792
[2]: crrev.com/c/1880356

Bug: 946860
Change-Id: I2138f03e81b6aaf1d4f8ec96fa94eb52f40b9a30
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1947944
Commit-Queue: Mandy Chen <mandy.chen@microsoft.com>
Reviewed-by: Lorne Mitchell <lomitch@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#722681}

third_party/blink/web_tests/TestExpectations

@@ -6115,6 +6115,17 @@ crbug.com/1025437 virtual/not-site-per-process/http/tests/devtools/debugger/fetc
 # Sheriff 2019-11-18
 crbug.com/1025944 [ Linux ] external/wpt/pointerevents/pointerlock/pointerevent_pointermove_on_chorded_mouse_button_when_locked.html [ Pass Failure ]
 
+# DevTools Security Tests (disabled temporarily as part of workflow)
+crbug.com/946860 http/tests/devtools/a11y-axe-core/security/security-overview-a11y-test.js [ Pass Failure ]
+crbug.com/946860 http/tests/devtools/security/blocked-mixed-content.js [ Pass Failure ]
+crbug.com/946860 http/tests/devtools/security/main-origin-assigned-despite-request-missing.js [ Pass Failure ]
+crbug.com/946860 http/tests/devtools/security/mixed-content-active-and-passive-reload.js [ Pass Failure ]
+crbug.com/946860 http/tests/devtools/security/mixed-content-reload.js [ Pass Failure ]
+crbug.com/946860 http/tests/devtools/security/mixed-content-sidebar.js [ Pass Failure ]
+crbug.com/946860 http/tests/devtools/security/security-blocked-mixed-content.js [ Pass Failure ]
+crbug.com/946860 http/tests/devtools/security/security-explanation-ordering.js [ Pass Failure ]
+crbug.com/946860 http/tests/devtools/security/security-summary.js [ Pass Failure ]
+
 # Timeout media preload test until preloading media destinations gets enabled.
 crbug.com/977033 http/tests/priorities/resource-load-priorities-media-preload.html [ Timeout ]