[Webkit-unassigned] [Bug 82593] New: Assertion fails when a focus navigation traverse a shadow host whose shadow root does not have any children.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=82593

           Summary: Assertion fails when a focus navigation traverse a
                    shadow host whose shadow root does not have any
                    children.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: hayato at chromium.org
                CC: dglazkov at chromium.org, rolandsteiner at chromium.org,
                    dominicc at chromium.org, morrita at google.com,
                    shinyak at chromium.org
            Blocks: 78585


I'll upload a test case.
This should not happen on release build.This happens only on debug build.

Let me explain the detail later. We should revise current traversal APIs so that they can handle the case when ShadowRoot is passed directly as a parameter.

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