DOM Range: surroundContents() should not check if newParent is in ancestors beforehand.

third_party/WebKit/LayoutTests/fast/dom/Range/surroundContents-1.html

-<p>This tests for HIERARCHY_REQUEST_ERRs when calling Range::surroundContents.</p>
-<div id="select" style="border: 1px solid blue;">Hello world.</div>
-<div id="insert" style="border: 1px solid red;"></div>
-<ul id="console"></ul>
-<script>
-function log(str) {
-    var li = document.createElement("li");
-    li.appendChild(document.createTextNode(str));
-    var console = document.getElementById("console");
-    console.appendChild(li);
-}
-
-var range = document.createRange();
-var select = document.getElementById("select");
-var text = select.firstChild;
-
-var insert = document.getElementById("insert");
-
-range.setStart(text, 0);
-range.setEnd(text, text.length);
-
-try {
-    range.surroundContents(select);
-} catch (e) {
-    var error = "HierarchyRequestError: Failed to execute 'surroundContents' on 'Range': The node provided contains the insertion point; it may not be inserted into itself.";
-    if (e != error)
-        log ("Failure, expected: " + error + "Was " + e);
-}
-
-try {
-    range.surroundContents(insert);
-} catch (e) {
-    log ("Failure: " + error);
-}
-</script>