[Webkit-unassigned] [Bug 96988] New: [Refactoring] Make ContentSelectorQuery work in content reprojection.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=96988

           Summary: [Refactoring] Make ContentSelectorQuery work in
                    content reprojection.
           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: shinyak at chromium.org
            Blocks: 96986


When we implement content reprojection, we have to make ContentSelectorQuery work if it has distributed elements.

In this system, node's parent might not be the parent for ContentSelectorQuery. Also, node's children might not be the children for ContentSelectorQuery.

<host 1> ---- SR
  |          |
  |- DIV (A) |- <host 2> ---------------SR
  |- DIV (B)       |-<shadow> (D)        |-<content select="DIV"> (E)
                   |-DIV (C)

when resolving <content select="DIV"> (E), we should pass <host 2> as parent, and DIV (A), DIV (B), and DIV (C) as its children.
We should be able to select DIV (A), DIV (B), and DIV (C) for this <content>.

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