[Webkit-unassigned] [Bug 197026] New: AX: AccessibilityObject::parentObject() doesn't need to be pure virtual

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=197026

            Bug ID: 197026
           Summary: AX: AccessibilityObject::parentObject() doesn't need
                    to be pure virtual
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: drousso at apple.com
                CC: webkit-bug-importer at group.apple.com

Rather than expect all subclasses to override `parentObject`, we can provide a stub implementation that does nothing so that we never have to worry about calling a pure virtual function (if we missed a subclass).

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