[webkit-changes] [WebKit/WebKit] 4241ce: [content-visibility] REGRESSION(267547 at main): Blan...

[Rob Buis]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 4241ce2896306ad1fc0443357a0ae93462fa7734
      https://github.com/WebKit/WebKit/commit/4241ce2896306ad1fc0443357a0ae93462fa7734
  Author: Rob Buis <rbuis at igalia.com>
  Date:   2024-01-24 (Wed, 24 Jan 2024)

  Changed paths:
    A LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-096-expected.html
    A LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-096.html
    A LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-097-expected.html
    A LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-097.html
    A LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-098-expected.html
    A LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-098.html
    A LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-099-expected.html
    A LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-099.html
    M Source/WebCore/rendering/RenderElement.cpp

  Log Message:
  -----------
  [content-visibility] REGRESSION(267547 at main): Blank panels on bing.com (content-visibility: auto)
https://bugs.webkit.org/show_bug.cgi?id=264989

Reviewed by Simon Fraser.

When content-visibility status changes from hidden/out of view to visible/in viewport we should use dirtyVisibleContentStatus
since setHasVisibleContent has no effect on the subtree of the content-visibility root if the layer already has this flag set, causing
the subtree to remain hidden.

* LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-096-expected.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-096.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-097-expected.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-097.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-098-expected.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-098.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-099-expected.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-099.html: Added.
* Source/WebCore/rendering/RenderElement.cpp:
(WebCore::RenderElement::styleWillChange):

Canonical link: https://commits.webkit.org/273399@main