Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: f0db2bb7cc9674bb195cca7d9fd625539b82f32e
      
https://github.com/WebKit/WebKit/commit/f0db2bb7cc9674bb195cca7d9fd625539b82f32e
  Author: Abrar Rahman Protyasha <[email protected]>
  Date:   2026-01-14 (Wed, 14 Jan 2026)

  Changed paths:
    M Source/WTF/wtf/PlatformHave.h
    M Source/WebKit/Configurations/AllowedSPI-legacy.toml
    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/RemoteLayerTree/ios/ScrollingTreeScrollingNodeDelegateIOS.mm

  Log Message:
  -----------
  [iOS] Allow scrolling interaction on frames and overflow scrollers even when 
the main frame is rubber-banding
https://bugs.webkit.org/show_bug.cgi?id=302754
rdar://52897797

Reviewed by Lily Spiniolas and Simon Fraser.

Adopt UIKit SPI to allow for scrolling of inner UIScrollViews when the
outer one is still rubber-banding. `_avoidsJumpOnInterruptedBounce` and
`tracksImmediatelyWhileDecelerating` are now supplanted by
`_decelerationTrackingBehavior`.

* Source/WTF/wtf/PlatformHave.h:
* Source/WebKit/Configurations/AllowedSPI-legacy.toml: Remove no longer used 
SPI.
* Source/WebKit/Configurations/AllowedSPI.toml:
* Source/WebKit/Platform/spi/ios/UIKitSPI.h:
* Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:
(-[WKWebView _setupScrollAndContentViews]):
* 
Source/WebKit/UIProcess/RemoteLayerTree/ios/ScrollingTreeScrollingNodeDelegateIOS.mm:
(WebKit::ScrollingTreeScrollingNodeDelegateIOS::commitStateAfterChildren):

Canonical link: https://commits.webkit.org/305618@main



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