Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 8065d5ec268671270242e5533eea3970cfddfce5
      
https://github.com/WebKit/WebKit/commit/8065d5ec268671270242e5533eea3970cfddfce5
  Author: Etienne Segonzac <[email protected]>
  Date:   2026-05-12 (Tue, 12 May 2026)

  Changed paths:
    A LayoutTests/overlay-region/scrollable-axes-change-expected.txt
    A LayoutTests/overlay-region/scrollable-axes-change.html
    M LayoutTests/platform/visionos/TestExpectations
    M 
Source/WebKit/UIProcess/RemoteLayerTree/ios/RemoteScrollingCoordinatorProxyIOS.h
    M 
Source/WebKit/UIProcess/RemoteLayerTree/ios/RemoteScrollingCoordinatorProxyIOS.mm

  Log Message:
  -----------
  [visionOS release] overlay-region/full-page-horizontal.html is flaky text 
failure.
https://bugs.webkit.org/show_bug.cgi?id=309297
<rdar://171843270>

Reviewed by Mike Wyrzykowski.

The flakyness revealed a real issue where, when a ScrollView went from
vertically scrollable to horizontally scrollable, we wouldn't update
the OverlayRegion behavior.

Test: overlay-region/scrollable-axes-change.html
      overlay-region/full-page-horizontal.html

* LayoutTests/overlay-region/scrollable-axes-change-expected.txt: Added.
* LayoutTests/overlay-region/scrollable-axes-change.html: Added.
Add a test that specifically targets this bugs and fails 100% without
the fix.
* LayoutTests/platform/visionos/TestExpectations:
Re-enable the flaky test.

* 
Source/WebKit/UIProcess/RemoteLayerTree/ios/RemoteScrollingCoordinatorProxyIOS.h:
* 
Source/WebKit/UIProcess/RemoteLayerTree/ios/RemoteScrollingCoordinatorProxyIOS.mm:
(WebKit::RemoteScrollingCoordinatorProxyIOS::selectOverlayRegionScrollViewIfNeeded):
(WebKit::RemoteScrollingCoordinatorProxyIOS::connectStateNodeLayers):
Keep track of TotalContentsSize updates so that, even if the selected
ScrollView doesn't change, we still update the OverlayRegion behavior.

Canonical link: https://commits.webkit.org/313070@main



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