[webkit-changes] [WebKit/WebKit] 9eca15: Avoid refcount churn for FillLayers without images.

[mattwoodrow]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 9eca15d5df1cf8a1fbf2a7dc6ded1fbed29ceb25
      https://github.com/WebKit/WebKit/commit/9eca15d5df1cf8a1fbf2a7dc6ded1fbed29ceb25
  Author: Matt Woodrow <mattwoodrow at apple.com>
  Date:   2024-12-09 (Mon, 09 Dec 2024)

  Changed paths:
    M Source/WebCore/rendering/RenderElement.cpp

  Log Message:
  -----------
  Avoid refcount churn for FillLayers without images.
https://bugs.webkit.org/show_bug.cgi?id=284256
<rdar://141130071>

Reviewed by Simon Fraser.

The background layers and mask layers property on RenderStyle always has at
least one FillLayer, even without an image. updateFillImages increments and then
decrements the refcount of these for every element with a changed style in
RenderElement::styleDidChange.

* Source/WebCore/rendering/RenderElement.cpp:
(WebCore::RenderElement::styleDidChange):

Canonical link: https://commits.webkit.org/287581@main



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