Cleanup desktop NTP metrics recording, part 2

chrome/browser/resources/local_ntp/most_visited_single.js

 /* Copyright 2015 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. */
 
  // Single iframe for NTP tiles.
 (function() {
 'use strict';
 
 
 /**
  * The different types of events that are logged from the NTP.  This enum is
  * used to transfer information from the NTP JavaScript to the renderer and is
  * not used as a UMA enum histogram's logged value.
  * Note: Keep in sync with common/ntp_logging_events.h
  * @enum {number}
  * @const
  */
 var LOG_TYPE = {
-  // A suggestion coming from the server was rendered.
-  NTP_SERVER_SIDE_SUGGESTION: 0,
-  // A suggestion coming from the client was rendered.
-  NTP_CLIENT_SIDE_SUGGESTION: 1,
   // All NTP Tiles have finished loading (successfully or failing).
   NTP_ALL_TILES_LOADED: 11,
 };
 
 
 /**
  * The different sources that an NTP tile can have.
  * Note: Keep in sync with common/ntp_logging_events.h
  * @enum {number}
  * @const
@@ skipping 270 matching lines @@
     var data = chrome.embeddedSearch.searchBox.getMostVisitedItemData(args.rid);
     if (!data)
       return;
 
     data.tid = data.rid;
     data.tileSource = NTPLoggingTileSource.CLIENT;
     if (!data.faviconUrl) {
       data.faviconUrl = 'chrome-search://favicon/size/16@' +
           window.devicePixelRatio + 'x/' + data.renderViewId + '/' + data.tid;
     }
-    logEvent(LOG_TYPE.NTP_CLIENT_SIDE_SUGGESTION);
     tiles.appendChild(renderTile(data));
   } else if (args.url) {
     // If a URL is passed: a server-side suggestion.
     args.tileSource = NTPLoggingTileSource.SERVER;
     // check sanity of the arguments
     if (/^javascript:/i.test(args.url) ||
         /^javascript:/i.test(args.thumbnailUrl))
       return;
-    logEvent(LOG_TYPE.NTP_SERVER_SIDE_SUGGESTION);
     tiles.appendChild(renderTile(args));
   } else {  // an empty tile
     tiles.appendChild(renderTile(null));
   }
 };
 
 /**
  * Called when the user decided to add a tile to the blacklist.
  * It sets of the animation for the blacklist and sends the blacklisted id
  * to the host page.
@@ skipping 278 matching lines @@
     var html = document.querySelector('html');
     html.dir = 'rtl';
   }
 
   window.addEventListener('message', handlePostMessage);
 };
 
 
 window.addEventListener('DOMContentLoaded', init);
 })();