[webkit-changes] [WebKit/WebKit] fdb2c9: Updating layout should not execute arbitrary scripts

[Ryosuke Niwa]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: fdb2c927fc43b71ccfb39e21ff28311d7a66370e
      https://github.com/WebKit/WebKit/commit/fdb2c927fc43b71ccfb39e21ff28311d7a66370e
  Author: Ryosuke Niwa <rniwa at webkit.org>
  Date:   2023-05-11 (Thu, 11 May 2023)

  Changed paths:
    M Source/WebCore/dom/Document.cpp
    M Source/WebCore/page/LocalFrameViewLayoutContext.cpp

  Log Message:
  -----------
  Updating layout should not execute arbitrary scripts
https://bugs.webkit.org/show_bug.cgi?id=256296

Reviewed by Simon Fraser.

Deploy ScriptDisallowedScope for the entirety of Document::updateLayout
and LocalFrameViewLayoutContext::performLayout.

* Source/WebCore/dom/Document.cpp:
(WebCore::isSafeToUpdateLayout): Deleted.
(WebCore::Document::updateLayout):
* Source/WebCore/page/LocalFrameViewLayoutContext.cpp:
(WebCore::LocalFrameViewLayoutContext::performLayout):

Canonical link: https://commits.webkit.org/263983@main