Remove Range.expand() method

third_party/WebKit/LayoutTests/fast/multicol/float-truncation.html

Index: third_party/WebKit/LayoutTests/fast/multicol/float-truncation.html
diff --git a/third_party/WebKit/LayoutTests/fast/multicol/float-truncation.html b/third_party/WebKit/LayoutTests/fast/multicol/float-truncation.html
index 43d0206ad4ed5eef8ae85391751798f42f4f33e0..9597272670ecadcf0d0608d57c668c1777bce7cd 100644
--- a/third_party/WebKit/LayoutTests/fast/multicol/float-truncation.html
+++ b/third_party/WebKit/LayoutTests/fast/multicol/float-truncation.html
@@ -72,11 +72,10 @@
 <script>
     function floatOffset(float)
     {
-        var range = document.createRange();
-        range.setStart(float, 0);
-        range.setEnd(float, 0);
-        range.expand("word");
-        var rect = range.getBoundingClientRect();
+        var selection = getSelection();
+        selection.collapse(float, 0);
+        selection.modify("extend", "forward", "word");
+        var rect = selection.getRangeAt(0).getBoundingClientRect();
         var parentRect = float.parentNode.getBoundingClientRect();
         return { width: rect.left - parentRect.left, height: rect.top - parentRect.top  };
     }