[webkit-changes] [WebKit/WebKit] df7eb9: Merge 254509 at main - [Nicosia] Async Scrolling: som...

[Carlos Garcia Campos]

  Branch: refs/heads/webkitglib/2.38
  Home:   https://github.com/WebKit/WebKit
  Commit: df7eb9519c26969a00107e36a5a128a4335e3388
      https://github.com/WebKit/WebKit/commit/df7eb9519c26969a00107e36a5a128a4335e3388
  Author: Carlos Garcia Campos <cgarcia at igalia.com>
  Date:   2022-09-15 (Thu, 15 Sep 2022)

  Changed paths:
    M Source/WebCore/page/scrolling/nicosia/ScrollingTreeFixedNode.cpp
    M Source/WebCore/page/scrolling/nicosia/ScrollingTreeOverflowScrollProxyNode.cpp
    M Source/WebCore/page/scrolling/nicosia/ScrollingTreeOverflowScrollProxyNode.h
    M Source/WebCore/page/scrolling/nicosia/ScrollingTreePositionedNode.cpp
    M Source/WebCore/page/scrolling/nicosia/ScrollingTreePositionedNode.h
    M Source/WebCore/page/scrolling/nicosia/ScrollingTreeStickyNodeNicosia.h

  Log Message:
  -----------
  Merge 254509 at main - [Nicosia] Async Scrolling: some elements are jumpy in gitlab
https://bugs.webkit.org/show_bug.cgi?id=245175

Reviewed by Simon Fraser and Žan Doberšek.

Bring several fixes for fixed elements that landed in cocoa but not in nicosia specific code.

* Source/WebCore/page/scrolling/nicosia/ScrollingTreeFixedNode.cpp:
(WebCore::ScrollingTreeFixedNode::applyLayerPositions):
* Source/WebCore/page/scrolling/nicosia/ScrollingTreeOverflowScrollProxyNode.cpp:
(WebCore::ScrollingTreeOverflowScrollProxyNode::scrollDeltaSinceLastCommit const):
* Source/WebCore/page/scrolling/nicosia/ScrollingTreeOverflowScrollProxyNode.h:
* Source/WebCore/page/scrolling/nicosia/ScrollingTreePositionedNode.cpp:
(WebCore::ScrollingTreePositionedNode::scrollDeltaSinceLastCommit const):
(WebCore::ScrollingTreePositionedNode::applyLayerPositions):
* Source/WebCore/page/scrolling/nicosia/ScrollingTreePositionedNode.h:
* Source/WebCore/page/scrolling/nicosia/ScrollingTreeStickyNodeNicosia.h:

Canonical link: https://commits.webkit.org/254509@main

(cherry picked from commit 414681c51c026880d048bccc323bc9cd32dc2a31)