selection: Align collapse-NN.html and extend-NN.html to the latest draft.

third_party/WebKit/LayoutTests/external/wpt/selection/collapse.js

Index: third_party/WebKit/LayoutTests/external/wpt/selection/collapse.js
diff --git a/third_party/WebKit/LayoutTests/external/wpt/selection/collapse.js b/third_party/WebKit/LayoutTests/external/wpt/selection/collapse.js
index 1894aad92b2ab4e418cd5e69244cb48c5f253545..7c97e2725d6ebb771ae506d4b07df767e798a88d 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/selection/collapse.js
+++ b/third_party/WebKit/LayoutTests/external/wpt/selection/collapse.js
@@ -22,6 +22,13 @@ function testCollapse(range, point) {
         return;
     }
 
+    if (!document.contains(point[0])) {
+        assertSelectionNoChange(function() {
+            selection.collapse(point[0], point[1]);
+        });
+        return;
+    }
+
     selection.collapse(point[0], point[1]);
 
     assert_equals(selection.rangeCount, 1,