[Webkit-unassigned] [Bug 239188] New: Remove <param> element behavior

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239188

            Bug ID: 239188
           Summary: Remove <param> element behavior
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Plug-ins
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: d at domenic.me

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.

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