CONSOLE WARNING: line 9: Mixed Content: The page at 'https://127.0.0.1:8443/security/mixedContent/resources/frame-with-insecure-image.html' was loaded over HTTPS, but requested an insecure image 'http://example.test:8080/security/resources/compass.jpg'. This content should also be served over HTTPS.
This test opens a window that loads an insecure image. We should trigger a mixed content callback because the main frame in the window is HTTPS but is displaying insecure content.