[Webkit-unassigned] [Bug 236750] New: AX: AccessibilityScrollView should be resilient to destruction of underlying scroll view

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236750

            Bug ID: 236750
           Summary: AX: AccessibilityScrollView should be resilient to
                    destruction of underlying scroll view
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tyler_w at apple.com
                CC: andresg_22 at apple.com,
                    webkit-bug-importer at group.apple.com

Sometimes, we can get into a state where we have a valid AccessibilityScrollView, backed by an iframe, with a destroyed WeakPtr<ScrollView> m_scrollView. When this happens, all of the content inside the iframe becomes inaccessible. We need to handle the case where an iframe changes the frame it holds (e.g. respect the current frame in HTMLFrameOwner::contentFrame, which can change).

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