[Webkit-unassigned] [Bug 61727] New: Add a utility function which dumps a tree for the Node, including a document of a frame.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=61727

           Summary: Add a utility function which dumps a tree for the
                    Node, including a document of a frame.
           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: rniwa at webkit.org


This is a separated patch from bug 59812.

https://bugs.webkit.org/show_bug.cgi?id=59812#c11

I don't need a public Node::parentOrHostOrFrameOwner function anymore, which is now a private function.
This patch now includes only one public member function, Node::showTreeForThisAcrossFrame, which is useful for debugging a complex document which contains iframe elements.
All other member functions are now private functions.

All functions are available only in debug build.

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