[Webkit-unassigned] [Bug 74670] New: Remove legacy node types

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=74670

           Summary: Remove legacy node types
           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: ojan at chromium.org
                CC: darin at apple.com, annevankesteren+webkit at gmail.com,
                    arv at chromium.org, rniwa at webkit.org, adamk at chromium.org


http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html

DOM4 removes a bunch of node types. We should remove them from webcore.

  const unsigned short ATTRIBUTE_NODE = 2; // historical
  const unsigned short CDATA_SECTION_NODE = 4; // historical
  const unsigned short ENTITY_REFERENCE_NODE = 5; // historical
  const unsigned short NOTATION_NODE = 12; // historical

There's already bug 74371 for attributes. 

It appears that ENTITY_REFERENCE_NODE can only be created in XML documents by script calling document.createEntityReference. I think we can safely remove them. This will also have the added benefit of improving appendChild/insertBefore performance.

I haven't looked into cdata_section or notation.

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