Add support for the column-fill property.

LayoutTests/fast/multicol/float-paginate-complex.html

Index: LayoutTests/fast/multicol/float-paginate-complex.html
diff --git a/LayoutTests/fast/multicol/float-paginate-complex.html b/LayoutTests/fast/multicol/float-paginate-complex.html
index 02b024c76d7135cdee1083cd737ba18be1dd964b..1fa05a5a09375c660cf6bccbcc81622c6595eb7a 100644
--- a/LayoutTests/fast/multicol/float-paginate-complex.html
+++ b/LayoutTests/fast/multicol/float-paginate-complex.html
@@ -1,4 +1,4 @@
-<div style="-webkit-column-width:300px;-moz-column-width:300px; border:2px solid black; height:400px">
+<div style="-moz-column-width:300px; -webkit-column-width:300px; column-width:300px; column-fill:auto; border:2px solid black; height:400px">
 This is some text.<br>
 This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
 This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
@@ -13,7 +13,7 @@ This is some text.<br>This is some text.<br>This is some text.<br>This is some t
 This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br></p>
 </div>
 
-<div style="margin-top:1em; -webkit-column-width:300px;-moz-column-width:300px; border:2px solid black; height:400px">
+<div style="margin-top:1em; -moz-column-width:300px; -webkit-column-width:300px; column-width:300px; column-fill:auto; border:2px solid black; height:400px">
 This is some text.<br>
 This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
 This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
@@ -28,7 +28,7 @@ This is some text.<br>This is some text.<br>This is some text.<br>This is some t
 This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br></p>
 </div>
 
-<div style="margin-top:1em; -webkit-column-width:300px;-moz-column-width:300px; border:2px solid black; height:400px">
+<div style="margin-top:1em; -moz-column-width:300px; -webkit-column-width:300px; column-width:300px; column-fill:auto; border:2px solid black; height:400px">
 <img style="float:left;background-color:green; width:300px;height:390px">
 Longer text designed to test float and wrapping behavior. Longer text designed to test float and wrapping behavior.
 Longer text designed to test float and wrapping behavior.
@@ -36,7 +36,7 @@ Longer text designed to test float and wrapping behavior.
 Longer text designed to test float and wrapping behavior.
 </div>
 
-<div style="margin-top:1em; -webkit-column-width:300px;-moz-column-width:300px; border:2px solid black; height:400px">
+<div style="margin-top:1em; -moz-column-width:300px; -webkit-column-width:300px; column-width:300px; column-fill:auto; border:2px solid black; height:400px">
 <img style="float:left;background-color:blue; width:100%;height:380px">
 <span style="font-size:24px"><img style="float:left;background-color:green;height:20px;width:100px">