Files
Marshall Greenblatt 6497b876b1 Fix srcdoc origin inheritance from opaque parents (fixes #4298)
Preserve existing opaque origins in the custom-scheme security policy
patch instead of deriving a new origin. This keeps srcdoc frames'
inherited origins consistent between the browser and renderer while
retaining distinct origins for sandboxed frames.

Add regression coverage for data URLs, document-written about:blank,
HTTPS, and nested data frames, including sandbox isolation. Disable
the sandboxed initial about:blank case pending resolution of
https://crbug.com/570981950.
2026-10-07 13:42:43 -04:00
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