[webkit-changes] [WebKit/WebKit] 0f6bd1: Fix scrollbar-gutter stable in vertical writing modes

[Luke Warlow]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 0f6bd1d186405f2134662981c82a0857f353b5e2
      https://github.com/WebKit/WebKit/commit/0f6bd1d186405f2134662981c82a0857f353b5e2
  Author: Luke Warlow <luke at warlow.dev>
  Date:   2023-06-07 (Wed, 07 Jun 2023)

  Changed paths:
    M LayoutTests/imported/w3c/web-platform-tests/css/css-overflow/scrollbar-gutter-vertical-lr-001-expected.txt
    M LayoutTests/imported/w3c/web-platform-tests/css/css-overflow/scrollbar-gutter-vertical-rl-001-expected.txt
    M Source/WebCore/rendering/RenderBox.cpp
    M Source/WebCore/rendering/RenderBoxModelObject.cpp
    M Source/WebCore/rendering/RenderLayerScrollableArea.cpp
    M Source/WebCore/rendering/RenderLayerScrollableArea.h

  Log Message:
  -----------
  Fix scrollbar-gutter stable in vertical writing modes
https://bugs.webkit.org/show_bug.cgi?id=257605

Reviewed by Simon Fraser.

Stable scrollbar gutters on non-viewports now correctly account for vertical writing modes.

* LayoutTests/imported/w3c/web-platform-tests/css/css-overflow/scrollbar-gutter-vertical-lr-001-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/css/css-overflow/scrollbar-gutter-vertical-rl-001-expected.txt:
* Source/WebCore/rendering/RenderBox.cpp:
(WebCore::RenderBox::includeHorizontalScrollbarSize const):
(WebCore::RenderBox::verticalScrollbarWidth const):
(WebCore::RenderBox::horizontalScrollbarHeight const):
(WebCore::RenderBox::overflowClipRect const):
* Source/WebCore/rendering/RenderBoxModelObject.cpp:
(WebCore::RenderBoxModelObject::constrainingRectForStickyPosition const):
* Source/WebCore/rendering/RenderLayerScrollableArea.cpp:
(WebCore::RenderLayerScrollableArea::verticalScrollbarWidth const):
(WebCore::RenderLayerScrollableArea::horizontalScrollbarHeight const):
(WebCore::RenderLayerScrollableArea::computeScrollOrigin):
* Source/WebCore/rendering/RenderLayerScrollableArea.h:

Canonical link: https://commits.webkit.org/264937@main