[Webkit-unassigned] [Bug 182643] New: AX: defer focusedUIElement notifications

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=182643

            Bug ID: 182643
           Summary: AX: defer focusedUIElement notifications
           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: cfleizach at apple.com
                CC: webkit-bug-importer at group.apple.com

We should defer focus ui element notifications when they happen during layout. This has the effect of

1) reducing chances where we recurse into calling layout again
2) we coalesce multiple focus notifications that would be needlessly sent
3) improve performance by not calling out to the accessibility notification machinery during layout

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