Third-party NTPs: Set "instant support" flag earlier.

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.
  */
 
+// Don't remove; see crbug.com/678778.
 // <include src="instant_iframe_validation.js">
 
 
 /**
+  * The different types of events that are logged from the NTP. The multi-iframe
+  * version of the NTP does *not* actually log any statistics anymore; this is
+  * only required as a workaround for crbug.com/698675.
+  * Note: Keep in sync with common/ntp_logging_events.h
+  * @enum {number}
+  * @const
+  */
+var NTP_LOGGING_EVENT_TYPE = {
+  NTP_ALL_TILES_RECEIVED: 12,
+};
+
+
+/**
  * The origin of this request.
  * @const {string}
  */
 var DOMAIN_ORIGIN = '{{ORIGIN}}';
 
 /**
  * Parses query parameters from Location.
  * @param {string} location The URL to generate the CSS url for.
  * @return {Object} Dictionary containing name value pairs for URL.
  */
@@ skipping 181 matching lines @@
     // Means that the suggestion data comes from the server. Create data object.
     data = {
       url: params.url,
       thumbnailUrl: params.tu || '',
       title: params.ti || '',
       direction: params.di || '',
       domain: params.dom || ''
     };
   } else {
     var apiHandle = chrome.embeddedSearch.newTabPage;
+    // Note: This does not actually result in any logging; it's a workaround for
+    // crbug.com/698675. It effectively sets the "instant support" state of the
+    // tab to true, which makes later calls to fetch the most visited items
+    // succeed.
+    apiHandle.logEvent(NTP_LOGGING_EVENT_TYPE.NTP_ALL_TILES_RECEIVED);
     data = apiHandle.getMostVisitedItemData(params.rid);
     if (!data)
       return;
   }
 
   if (isFinite(params.dummy) && parseInt(params.dummy, 10)) {
     data.dummy = true;
   }
   if (/^javascript:/i.test(data.url) ||
       /^javascript:/i.test(data.thumbnailUrl))
@@ skipping 12 matching lines @@
   if (navigator.sendBeacon) {
     navigator.sendBeacon(url);
   } else {
     // if sendBeacon is not enabled, we fallback for "a ping".
     var a = document.createElement('a');
     a.href = '#';
     a.ping = url;
     a.click();
   }
 }