Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: cc9c1ba1bb8b3c60c6e3789d94a6e1bacd74ae4f
      
https://github.com/WebKit/WebKit/commit/cc9c1ba1bb8b3c60c6e3789d94a6e1bacd74ae4f
  Author: Etienne Segonzac <[email protected]>
  Date:   2026-02-12 (Thu, 12 Feb 2026)

  Changed paths:
    M Source/WebKit/Configurations/AllowedSPI.toml
    M Source/WebKit/Platform/spi/ios/UIKitSPI.h
    M Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm
    M Source/WebKit/UIProcess/ios/WKBaseScrollView.mm

  Log Message:
  -----------
  [visionOS] Opt into the alternate scrolling indicator rendering
https://bugs.webkit.org/show_bug.cgi?id=307544
<rdar://169644435>

Reviewed by Mike Wyrzykowski and Abrar Rahman Protyasha.

The new rendering temporarily needs a hint about the opacity of the
ScrollView.
When available, opt into the new rendering by default, except for cases
where the WebView is set as non-opaque.

* Source/WebKit/Configurations/AllowedSPI.toml:
Document the temporary SPI use.

* Source/WebKit/Platform/spi/ios/UIKitSPI.h:
Add the SPI stub.

* Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:
(-[WKWebView _setOpaqueInternal:]):
Opt the top level WebView in based on the `isOpaque` flag.

* Source/WebKit/UIProcess/ios/WKBaseScrollView.mm:
(-[WKBaseScrollView initWithFrame:]):
Opt ScrollViews in.

Canonical link: https://commits.webkit.org/307363@main



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