Bug 239188

Summary:	Remove <param> element behavior
Product:	WebKit	Reporter:	Domenic Denicola <d>
Component:	DOM	Assignee:	Anne van Kesteren <annevk>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	beidson, miketaylr, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Domenic Denicola 2022-04-12 13:55:06 PDT

See https://github.com/whatwg/html/pull/7816 . Currently WebKit (and Blink) have some behavior where <param>s with name="movie", "src", "data", "code", or "url" can be used in place of the surrounding <object>'s data="" attribute. (WebKit appears to only use "data", "movie", and "src".)

In Blink, we measured in the wild and found that 0.00002% of these cases successfully resolved to a PDF resource. (The only type of plugin supported by <object> these days.) All other cases did not resolve successfully to a resource, probably because the resource was something like Flash which we don't load. So, we are planning to remove this behavior in Blink. You can follow our progress in https://bugs.chromium.org/p/chromium/issues/detail?id=1315717 .

Once this behavior is removed, the <param> element becomes a no-op, and pretty much all of its code can be deleted.

Comment 1 Radar WebKit Bug Importer 2022-04-19 13:56:17 PDT

<rdar://problem/91983957>

Comment 2 Anne van Kesteren 2023-12-29 04:20:04 PST

Pull request: https://github.com/WebKit/WebKit/pull/22267

Comment 3 EWS 2024-01-06 09:32:13 PST

Committed 272734@main (acfd1f38e4e7): <https://commits.webkit.org/272734@main>

Reviewed commits have been landed. Closing PR #22267 and removing active labels.