Web Inspector: bind entire subtree upon childNodeInserted so that text node were...

Web Inspector: bind entire subtree upon childNodeInserted so that text node were accounted.
https://bugs.webkit.org/show_bug.cgi?id=78116

Reviewed by Yury Semikhatsky.

Source/WebCore:

* inspector/front-end/DOMAgent.js:
(WebInspector.DOMNode):
(WebInspector.DOMDocument):
(WebInspector.DOMAgent.prototype._setDocument):
(WebInspector.DOMAgent.prototype._setDetachedRoot):
(WebInspector.DOMAgent.prototype._setChildNodes):
(WebInspector.DOMAgent.prototype._childNodeRemoved):
(WebInspector.DOMAgent.prototype._unbind):

LayoutTests:

* inspector/elements/insert-node-expected.txt:
* inspector/elements/insert-node.html:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@107093 268f45cc-cd09-0410-ab3c-d52691b4dbfc