Merge 159007 "Notify nodes removal to Range/Selection after disp..."

LayoutTests/editing/selection/selection-change-in-mutation-event-by-remove-children.html

 <div id="container">
 <p id="description"></p>
 <div id="sample">foobar</div>
 </div>
 <div id="console"></div>
 <script src="../../fast/js/resources/js-test-pre.js"></script>
 <script>
 description('Selection should be updated after set innerHTML.');
 
 function $(id) { return document.getElementById(id); }
 
 var selection = window.getSelection();
 document.addEventListener('DOMNodeRemovedFromDocument', function () {
     selection.selectAllChildren($('sample'));
 }, true);
 
 selection.selectAllChildren($('sample'));
 $('sample').innerHTML = '';
 
 shouldBe('selection.anchorOffset', '0');
 shouldBe('selection.focusOffset', '0');
 
 if (window.testRunner)
     $('container').outerHTML = '';
 </script>
 <script src="../../fast/js/resources/js-test-post.js"></script>