Blocked access to external URL http://www1.localhost:8800/content-security-policy/support/postmessage-pass.html
IFrames blocked by CSP should generate a 'load', not 'error' event, regardless of blocked state. This means they appear to be normal cross-origin loads, thereby not leaking URL information directly to JS.

    

Harness Error (TIMEOUT), message = null

FAIL Expecting logs: ["PASS IFrame #1 generated a load event.","PASS IFrame #2 generated a load event.","PASS IFrame #3 generated a load event.","violated-directive=frame-src"] assert_unreached: Logging timeout, expected logs violated-directive=frame-src not sent. Reached unreachable code
TIMEOUT Expecting alerts: ["PASS","PASS"] Test timed out