predictors: Highlight prefetchable resources in webui.

chrome/browser/resources/predictors/resource_prefetch_predictor.js

 // Copyright 2014 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.
 
 /**
  * Requests the database from the backend.
  */
 function requestResourcePrefetchPredictorDb() {
   chrome.send('requestResourcePrefetchPredictorDb');
 }
@@ skipping 54 matching lines @@
     var main = database[i];
 
     for (var j = 0; j < main.resources.length; ++j) {
       var resource = main.resources[j];
       var row = document.createElement('tr');
 
       if (j == 0) {
         var t = document.createElement('td');
         t.rowSpan = main.resources.length;
         t.textContent = truncateString(main.main_frame_url);
-        t.className = 'last';
         row.appendChild(t);
       }
 
-      if (j == main.resources.length - 1)
-        row.className = 'last';
+      row.className = resource.is_prefetchable ? 'action-prerender'
+                                               : 'action-none';
 
       row.appendChild(document.createElement('td')).textContent =
           truncateString(resource.resource_url);
       row.appendChild(document.createElement('td')).textContent =
           resource.resource_type;
       row.appendChild(document.createElement('td')).textContent =
           resource.number_of_hits;
       row.appendChild(document.createElement('td')).textContent =
           resource.number_of_misses;
       row.appendChild(document.createElement('td')).textContent =
           resource.consecutive_misses;
       row.appendChild(document.createElement('td')).textContent =
           resource.position;
       row.appendChild(document.createElement('td')).textContent =
           resource.score;
       body.appendChild(row);
     }
   }
 }
 
 document.addEventListener('DOMContentLoaded',
                           requestResourcePrefetchPredictorDb);