Fix warning about duplicate file in Copy Headers build phase for WebKit project. warning: Skipping duplicate build file in Copy Headers build phase: Source/WebKit/UIProcess/API/Cocoa/_WKExperimentalFeature.h Regressed in this commit: Replace +[WKPreferences _experimentalFeatures] and +[WKPreferences _internalDebugFeatures] with SPI for exposing all features https://bugs.webkit.org/show_bug.cgi?id=250237 rdar://103648153 https://commits.webkit.org/258746@main
<rdar://problem/105311947>
Pull request: https://github.com/WebKit/WebKit/pull/9969
Committed 260152@main (0c0364ca2803): <https://commits.webkit.org/260152@main> Reviewed commits have been landed. Closing PR #9969 and removing active labels.