[New Multicolumn] Add support for column-span:all

LayoutTests/fast/multicol/newmulticol/compare-with-old-impl/clone-block-children-inline-mismatch-crash.html

Index: LayoutTests/fast/multicol/newmulticol/compare-with-old-impl/clone-block-children-inline-mismatch-crash.html
diff --git a/LayoutTests/fast/multicol/clone-block-children-inline-mismatch-crash.html b/LayoutTests/fast/multicol/newmulticol/compare-with-old-impl/clone-block-children-inline-mismatch-crash.html
similarity index 61%
copy from LayoutTests/fast/multicol/clone-block-children-inline-mismatch-crash.html
copy to LayoutTests/fast/multicol/newmulticol/compare-with-old-impl/clone-block-children-inline-mismatch-crash.html
index afe0d36f186d9bfdc7d671cb74bb54c08d9dc09c..6b777c6aa406f0162736e7a0ae4a48f24501969c 100644
--- a/LayoutTests/fast/multicol/clone-block-children-inline-mismatch-crash.html
+++ b/LayoutTests/fast/multicol/newmulticol/compare-with-old-impl/clone-block-children-inline-mismatch-crash.html
@@ -10,20 +10,22 @@ Test passes if it does not crash.
 <script>
 if (window.testRunner)
     testRunner.dumpAsText();
+if (window.internals)
+    internals.settings.setRegionBasedColumnsEnabled(true);
 
-function runTest() 
+function runTest()
 {
     div1 = document.createElement('div');
-    div1.setAttribute('id', 'div1'); 
-    document.body.appendChild(div1); 
-    q1 = document.createElement('q'); 
+    div1.setAttribute('id', 'div1');
+    document.body.appendChild(div1);
+    q1 = document.createElement('q');
     q1.setAttribute('id', 'q1');
     div1.appendChild(q1);
     div2 = document.createElement('div');
-    div2.setAttribute('id', 'div2'); 
-    q1.appendChild(div2); 
+    div2.setAttribute('id', 'div2');
+    q1.appendChild(div2);
 }
 
 window.onload = runTest;
 </script>
-</html>
+</html>