Don't add artifical 1 pixel width to empty tables

LayoutTests/fast/table/large-shrink-wrapped-width.html

 <style>
 .container {
     width: 2000000px;
 }
 .child {
     display:inline-block;
     background-color: orange;
     height: 10px;
 }
 td {
     padding: 0;
 }
 table {
     border-spacing: 0;
     display: inline-table;
     outline: 5px solid salmon;
 }
 </style>
 
 <!-- The inner div should fill the container. It doesn't right now because we artificially limit the table's maxPreferredLogicalWidth to 1000000.
     See the related FIXME in TableLayoutAlgorithm.h.
  -->
 <div class="container">
     <div style="display:inline-block; border: 5px solid salmon;" data-expected-width=2000000>
         <table style="width:100%; background-color:green; table-layout:fixed"><tr><td>Content</td></tr></table>
     </div>
 </div>
 
 <div class="container">
     <!-- The 1 px extra is from the align=right td. -->

[mstensho (USE GERRIT), 2015/05/18 08:45:38]

Strange how align=right could do that, but now the extra pixel is gone, so these
comments are invalid and should be removed.

-    <table data-expected-width=20001>
+    <table data-expected-width=20000>
         <td align=right></td>
         <td width="100%">
             <div class="child" style="width: 10000px"></div><div class="child" style="width: 10000px"></div>
         </td>
     </table>
 </div>
 
 <div class="container">
     <!-- The 1 px extra is from the align=right td. -->
-    <table data-expected-width=1000001>
+    <table data-expected-width=1000000>
         <td align=right></td>
         <td width="100%">
             <div class="child" style="width: 500000px"></div><div class="child" style="width: 500000px"></div>
         </td>
     </table>
 </div>
 
 <div class="container">
     <!-- The 1 px extra is from the align=right td. -->
-    <table data-expected-width=1500001>
+    <table data-expected-width=1500000>
         <td align=right></td>
         <td width="100%">
             <div class="child" style="width: 500000px"></div><div class="child" style="width: 500000px"></div><div class="child" style="width: 500000px"></div>
         </td>
     </table>
 </div>
 
 <script src="../../resources/check-layout.js"></script>
 <script>
 checkLayout('.container');
 </script>