Log NTP hovers in 1993 clients

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 44 matching lines @@
   link.href = href;
   if ('pos' in params && isFinite(params.pos))
     link.ping = '/log.html?pos=' + params.pos;
   link.title = title;
   link.target = '_top';
   // Exclude links from the tab order.  The tabIndex is added to the thumbnail
   // parent container instead.
   link.tabIndex = '-1';
   if (text)
     link.textContent = text;
+  link.addEventListener('mouseover', function() {
+    var ntpApiHandle = chrome.embeddedSearch.newTabPage;
+    ntpApiHandle.logEvent('NewTabPage.NumberOfMouseOvers', 1, null);
+  });
   return link;
 }
 
 
 /**
  * Decodes most visited styles from URL parameters.
  * - f: font-family
  * - fs: font-size as a number in pixels.
  * - c: A hexadecimal number interpreted as a hex color code.
  * - ts: Truthy iff text should be drawn with a shadow.
@@ skipping 32 matching lines @@
   var apiHandle = chrome.embeddedSearch.searchBox;
   var data = apiHandle.getMostVisitedItemData(params.rid);
   if (!data)
     return;
   if (/^javascript:/i.test(data.url))
     return;
   if (data.direction)
     document.body.dir = data.direction;
   fill(params, data);
 }