[webkit-changes] [WebKit/WebKit] 49d32a: AX: AXIsolatedTree should hold a WeakPtr to the AX...

[AndresGonzalezApple]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 49d32a5281e1c8c0094169eedbaf9af582efac8c
      https://github.com/WebKit/WebKit/commit/49d32a5281e1c8c0094169eedbaf9af582efac8c
  Author: Andres Gonzalez <andresg_22 at apple.com>
  Date:   2023-01-25 (Wed, 25 Jan 2023)

  Changed paths:
    M Source/WebCore/accessibility/isolatedtree/AXIsolatedTree.h

  Log Message:
  -----------
  AX: AXIsolatedTree should hold a WeakPtr to the AXObjectCache.
https://bugs.webkit.org/show_bug.cgi?id=251151
<rdar://problem/104645083>

Reviewed by Chris Fleizach.

Replaced the raw pointer to AXObjectCache with a WeakPtr. Audited that we are checking for null everywhere we access this instance variable.

* Source/WebCore/accessibility/isolatedtree/AXIsolatedTree.h:
(WebCore::AXIsolatedTree::axObjectCache const):

Canonical link: https://commits.webkit.org/259398@main