[webkit-changes] [WebKit/WebKit] 4a4b32: Add scrollbar width style to ScrollableAreaParameters

[Luke Warlow]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 4a4b3254505852dd5204ff5c5b6d4882143175eb
      https://github.com/WebKit/WebKit/commit/4a4b3254505852dd5204ff5c5b6d4882143175eb
  Author: Luke Warlow <luke at warlow.dev>
  Date:   2023-07-10 (Mon, 10 Jul 2023)

  Changed paths:
    M Source/WebCore/page/scrolling/AsyncScrollingCoordinator.cpp
    M Source/WebCore/page/scrolling/ScrollingCoordinatorTypes.h
    M Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.h
    M Source/WebCore/page/scrolling/mac/ScrollerPairMac.mm
    M Source/WebCore/platform/ScrollTypes.h
    M Source/WebKit/Shared/WebCoreArgumentCoders.serialization.in

  Log Message:
  -----------
  Add scrollbar width style to ScrollableAreaParameters
https://bugs.webkit.org/show_bug.cgi?id=259017

Reviewed by Simon Fraser.

This patch adds scrollbarWidthStyle to ScrollableAreaParameters.
This is wired up to ScrollerPairMac to replace the hardcoded ScrollbarWidth::Auto.
This will allow a follow up to fix the thin value having no affect with composited scrolling.

This patch has no behaviour changes.

* Source/WebCore/page/scrolling/AsyncScrollingCoordinator.cpp:
(WebCore::AsyncScrollingCoordinator::setScrollingNodeScrollableAreaGeometry):
* Source/WebCore/page/scrolling/ScrollingCoordinatorTypes.h:
(WebCore::ScrollableAreaParameters::operator== const):
* Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.h:
* Source/WebCore/page/scrolling/mac/ScrollerPairMac.mm:
(WebCore::ScrollerPairMac::scrollbarWidthStyle const):
* Source/WebCore/platform/ScrollTypes.h:
* Source/WebKit/Shared/WebCoreArgumentCoders.serialization.in:

Canonical link: https://commits.webkit.org/265907@main