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>.
ContentSelectorQuery is now working. So let's close this.