NEW305420
WebKit has too many concepts of custom user agent 
https://bugs.webkit.org/show_bug.cgi?id=305420
Summary WebKit has too many concepts of custom user agent
Brent Fulgham
Reported 2026-01-13 13:52:24 PST
WebKit's architecture spreads the concept of `custom User Agent` in too many places. It's part of FrameLoader, DocumentLoader, WebsiteDataPolicy, and also held as `customUserAgent` and `customUserAgentAsSiteSpecificQuirks`. This is confusing and leads to errors. We should fix this.
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Radar WebKit Bug Importer
Comment 1 2026-01-13 16:27:04 PST
<rdar://problem/168103063>
karl
Comment 2 2026-01-14 00:12:11 PST
We can adopt a step by step for fixing this. I have a patch which consolidate needs*UserAgent into one function with a parameter passage. That would progress things too.
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