Always apply parent clips to selection rects when painting.

third_party/WebKit/LayoutTests/paint/selection/resources/selection.js

 function selectRangeAfterLayoutAndPaint(startElement, startIndex, endElement, endIndex) {
     runAfterLayoutAndPaint(function() {
         selectRange(startElement, startIndex, endElement, endIndex);
       }, true);
 }
 
 function selectRange(startElement, startIndex, endElement, endIndex) {
   var range = document.createRange();
   range.setStart(startElement, startIndex);
   range.setEnd(endElement, endIndex);
   window.getSelection().addRange(range);
 }
+
+function selectNode(element) {
+  var range = document.createRange();
+  range.selectNode(element);
+  window.getSelection().addRange(range);
+}