There are two cases we don't sync the behavior of cookie blocking and dFPI 1. [Permission propagation](https://searchfox.org/mozilla-central/rev/25d5a4443a7e13cfa58eff38f1faa5e69f0b170f/toolkit/components/antitracking/ContentBlocking.cpp#779-784) 2. [API to check storage permission](https://searchfox.org/mozilla-central/rev/25d5a4443a7e13cfa58eff38f1faa5e69f0b170f/toolkit/components/antitracking/ContentBlocking.cpp#1220-1225) in cookie blocking, we only grant permission for first-level iframe, however, this restriction doesn't apply to dFPI. We should fix the discrepancy between cookie blocking and dFPI.
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There are two cases we don't sync the behavior of cookie blocking and dFPI 1. [Permission propagation](https://searchfox.org/mozilla-central/rev/25d5a4443a7e13cfa58eff38f1faa5e69f0b170f/toolkit/components/antitracking/ContentBlocking.cpp#779-784) 2. [API to check storage permission](https://searchfox.org/mozilla-central/rev/25d5a4443a7e13cfa58eff38f1faa5e69f0b170f/toolkit/components/antitracking/ContentBlocking.cpp#1220-1225) In cookie blocking, we only grant permission for first-level iframes, however, this restriction doesn't apply to dFPI. We should fix the discrepancy between cookie blocking and dFPI.