Added already_open column to chrome://suggestions-internals.

chrome/browser/resources/suggestions_internals/suggestions_internals.js

 // Copyright (c) 2012 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.
 
 /**
  * Javascript for suggestions_internals.html, served from
  * chrome://suggestions-internals/. This is used to debug suggestions ranking.
  * When loaded, the page will show the current set of suggestions, along with a
  * large set of information (e.g. all the signals that were taken into
  * consideration for deciding which pages were selected to be shown to the user)
@@ skipping 43 matching lines @@
    * columns.
    * @type {Array.<string>}
    * @const
    */
   var PREFERRED_COLUMN_ORDER = [
     'title',
     'url',
     'score'
   ];
 
+  function setBooleanColumn(column, value) {
+    if (value) {
+      column.innerText = 'Y';
+      column.classList.add('boolean-property-true');
+    } else {
+      column.innerText = 'N';
+      column.classList.add('boolean-property-false');
+    }
+  }
+
   /**
    * Called by Chrome code, with a ranked list of suggestions. The columns
    * to be displayed are calculated automatically from the properties of the
    * elements in the list, such that all properties have a column.
    */
   function setSuggestions(list) {
     // Build a list of all the columns that will be displayed.
     var columns = [];
     list.forEach(function(entry) {
       for (var column in entry) {
@@ skipping 52 matching lines @@
         var path = column_name.split('.');
         var data = entry;
         for (var i = 0; i < path.length; ++i) {
           if (data && data.hasOwnProperty(path[i]))
             data = data[path[i]];
           else
             data = undefined;
         }
         // Only add the column if the current suggestion has this property
         // (otherwise, leave the cell empty).
-        if (data) {
-          // If the text is a URL, make it an anchor element.
-          if (/^https?:\/\/.+$/.test(data)) {
+        if (typeof(data) != 'undefined') {
+          if (typeof(data) == 'boolean') {
+            setBooleanColumn(column, data);
+          } else if (/^https?:\/\/.+$/.test(data)) {
+            // If the text is a URL, make it an anchor element.
             var anchor = document.createElement('a');
             anchor.href = data;
             anchor.innerText = data;
             column.appendChild(anchor);
           } else {
             column.innerText = data;
           }
         } else if (column_name == 'rank') {
           column.innerText = rank++;
         } else if (column_name == 'screenshot') {
           var thumbnailUrl = 'chrome://thumb/' + entry.url;
           var img = document.createElement('img');
-          img.onload = function() {
-            column.innerText = 'Y';
-            column.classList.add('has-screenshot');
-          }
-          img.onerror = function() { column.innerText = 'N'; }
+          img.onload = function() { setBooleanColumn(column, true); }
+          img.onerror = function() { setBooleanColumn(column, false); }
           img.src = thumbnailUrl;
         } else if (column_name == 'favicon') {
           var faviconUrl = 'chrome://favicon/size/16/' + entry.url;
           column.style.backgroundImage = url(faviconUrl);
           column.style.backgroundRepeat = 'no-repeat';
           column.style.backgroundPosition = 'center center';
         }
         row.appendChild(column);
       });
       table.appendChild(row);
     });
 
     output.appendChild(table);
   }
 
   return {
     initialize: initialize,
     setSuggestions: setSuggestions
   };
 });
 
 document.addEventListener('DOMContentLoaded', suggestionsInternals.initialize);