Refactoring: Move m_mayDisplaySeamlesslyWithParent down to Document

The member is used only in Document, thus no reason to
stay in SecurityContext.

TEST=none
BUG=none
R=haraken@chromium.org, abarth, haraken, hayato

Review URL: https://codereview.chromium.org/27615003

git-svn-id: svn://svn.chromium.org/blink/trunk@159829 bbb929c8-8fbe-4397-9dbb-9b2b20218538
PassRefPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, PassRefPtr<NodeFilter> filter, bool expandEntityReferences, ExceptionState& es)
{
    if (!root) {
        es.throwUninformativeAndGenericDOMException(NotSupportedError);
        return 0;
    }
    UNUSED_PARAM(expandEntityReferences);
    return NodeIterator::create(root, whatToShow, filter);
}

PassRefPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, PassRefPtr<NodeFilter> filter, bool expandEntityReferences, ExceptionState& es)
{
    if (!root) {
        es.throwUninformativeAndGenericDOMException(NotSupportedError);
        return 0;
    }
    UNUSED_PARAM(expandEntityReferences);
    return NodeIterator::create(root, whatToShow, filter);
}
