Convert yet more of HTMLConverter to C++
https://bugs.webkit.org/show_bug.cgi?id=130850

Reviewed by Anders Carlsson.

* editing/cocoa/HTMLConverter.mm:
(HTMLConverterCaches::isAncestorsOfStartToBeConverted):
(HTMLConverter::HTMLConverter):
(HTMLConverter::~HTMLConverter):
(HTMLConverter::convert):
(HTMLConverter::computedAttributesForElement):
(HTMLConverter::attributesForElement):
(HTMLConverter::_newParagraphForElement):
(HTMLConverter::_newLineForElement):
(HTMLConverter::_newTabForElement):
(HTMLConverter::_addAttachmentForElement):
(HTMLConverter::_addQuoteForElement):
(HTMLConverter::_addValue):
(HTMLConverter::_processHeadElement):
(HTMLConverter::_enterElement):
(HTMLConverter::_addTableCellForElement):
(HTMLConverter::_processElement):
(HTMLConverter::_addMarkersToList):
(HTMLConverter::_exitElement):
(HTMLConverter::_processText):
(HTMLConverter::_traverseNode):
(HTMLConverter::_traverseFooterNode):
(WebCore::attributedStringFromRange):
(_childrenForNode): Deleted.
(HTMLConverter::_computedAttributesForElement): Deleted.
(HTMLConverter::_attributesForElement): Deleted.
(HTMLConverter::_loadFromDOMRange): Deleted.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@166454 268f45cc-cd09-0410-ab3c-d52691b4dbfc