We pass in the new trait implementation to process the value,
which the CSP crate calls in its implementation. Additionally,
since the request url can change, we need to propagate that
to load_data as well.
This also avoids a crash when a discarded browsing context is
accessed while navigating the iframes in the WPT tests. This
is a known issue, but hampers investigation into actual
Trusted Types support.
All tests using iframes don't work, as they don't have the
correct browsing context. The other tests do work, but some
fail on header ascii parsing (#36801) or error while handling
errors. That last one I don't understand based on the current
code and I would need to do a deep-dive in the existing code
to understand better what's going on.
Part of #36258
Part of #37920
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Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>
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