Temporarily Making Server-Side NTP Recommendations Use LINK Transition Instead of AUTO_BOOKMARK

chrome/browser/resources/local_ntp/most_visited_util.js

 // Copyright 2013 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 Utilities for rendering most visited thumbnails and titles.
  */
 
 <include src="instant_iframe_validation.js">
@@ skipping 103 matching lines @@
     link.textContent = text;
   link.addEventListener('mouseover', function() {
     var ntpApiHandle = chrome.embeddedSearch.newTabPage;
     ntpApiHandle.logEvent(NTP_LOGGING_EVENT_TYPE.NTP_MOUSEOVER);
   });
 
   // Webkit's security policy prevents some Most Visited thumbnails from
   // working (those with schemes different from http and https). Therefore,
   // navigateContentWindow is being used in order to get all schemes working.
   link.addEventListener('click', function handleNavigation(e) {
-    e.preventDefault();
     var ntpApiHandle = chrome.embeddedSearch.newTabPage;
     if ('pos' in params && isFinite(params.pos)) {
       ntpApiHandle.logMostVisitedNavigation(parseInt(params.pos, 10),
                                             provider || '');
     }
-    ntpApiHandle.navigateContentWindow(href, getDispositionFromEvent(e));
+    var isServerSuggestion = 'url' in params;
+    if (!isServerSuggestion) {
+      e.preventDefault();
+      ntpApiHandle.navigateContentWindow(href, getDispositionFromEvent(e));
+    }
+    // Else follow <a> normally, so transition type would be LINK.
   });
 
   return link;
 }
 
 
 /**
  * Decodes most visited styles from URL parameters.
  * - f: font-family
  * - fs: font-size as a number in pixels.
@@ skipping 60 matching lines @@
     data.provider = params.pr || CLIENT_PROVIDER_NAME;
   }
   if (/^javascript:/i.test(data.url) ||
       /^javascript:/i.test(data.thumbnailUrl) ||
       !/^[a-z0-9]{0,8}$/i.test(data.provider))
     return;
   if (data.direction)
     document.body.dir = data.direction;
   fill(params, data);
 }