Split NTP_TILE_LOADED event.

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 = {
   // The suggestion is coming from the server.
   NTP_SERVER_SIDE_SUGGESTION: 0,
   // The suggestion is coming from the client.
   NTP_CLIENT_SIDE_SUGGESTION: 1,
   // Indicates a tile was rendered, no matter if it's a thumbnail, a gray tile
   // or an external tile.
   NTP_TILE: 2,
-  // A NTP Tile has finished loading (successfully or failing).
-  NTP_TILE_LOADED: 10,
+  // 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
  */
 var NTPLoggingTileSource = {
@@ skipping 88 matching lines @@
 
 /**
  * Down counts the DOM elements that we are waiting for the page to load.
  * When we get to 0, we send a message to the parent window.
  * This is usually used as an EventListener of onload/onerror.
  */
 var countLoad = function() {
   loadedCounter -= 1;
   if (loadedCounter <= 0) {
     showTiles();
-    logEvent(LOG_TYPE.NTP_TILE_LOADED);
+    logEvent(LOG_TYPE.NTP_ALL_TILES_LOADED);
     window.parent.postMessage({cmd: 'loaded'}, DOMAIN_ORIGIN);
     loadedCounter = 1;
   }
 };
 
 
 /**
  * Handles postMessages coming from the host page to the iframe.
  * Mostly, it dispatches every command to handleCommand.
  */
@@ skipping 463 matching lines @@
     var html = document.querySelector('html');
     html.dir = 'rtl';
   }
 
   window.addEventListener('message', handlePostMessage);
 };
 
 
 window.addEventListener('DOMContentLoaded', init);
 })();