Moving checkboxes to a separate column.

chrome/browser/resources/shared/js/cr/ui/table/table_header.js

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview This implements a table header.
  */
 
 cr.define('cr.ui.table', function() {
   const TableSplitter = cr.ui.TableSplitter;
@@ skipping 62 matching lines @@
       this.headerInner_.textContent = '';
 
       if (!cm || ! dm) {
         return;
       }
 
       for (var i = 0; i < cm.size; i++) {
         var cell = this.ownerDocument.createElement('div');
         cell.style.width = cm.getWidth(i) + '%';
         cell.className = 'table-header-cell';
-        cell.addEventListener('click', this.createSortFunction_(i).bind(this));
+        if (dm.isSortable(cm.getId(i)))
+          cell.addEventListener('click',
+                                this.createSortFunction_(i).bind(this));
 
         cell.appendChild(this.createHeaderLabel_(i));
         this.headerInner_.appendChild(cell);
       }
       this.appendSplitters_();
     },
 
     /**
      * Appends column splitters to the table header.
      */
@@ skipping 64 matching lines @@
   /**
    * The table associated with the header.
    * @type {cr.ui.Table}
    */
   cr.defineProperty(TableHeader, 'table');
 
   return {
     TableHeader: TableHeader
   };
 });