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

chrome/common/search/ntp_logging_events.h

 // 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.
 
 #ifndef CHROME_COMMON_SEARCH_NTP_LOGGING_EVENTS_H_
 #define CHROME_COMMON_SEARCH_NTP_LOGGING_EVENTS_H_
 
 // 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.
@@ skipping 11 matching lines @@
   // Deleted: NTP_MOUSEOVER = 9
   // Deleted: NTP_TILE_LOADED = 10,
 
   // All NTP tiles have finished loading (successfully or failing). Logged only
   // by the single-iframe version of the NTP.
   NTP_ALL_TILES_LOADED = 11,
 
   // The data for all NTP tiles (title, URL, etc, but not the thumbnail image)
   // has been received by the most visited iframe. In contrast to
   // NTP_ALL_TILES_LOADED, this is recorded before the actual DOM elements have
-  // loaded (in particular the thumbnail images). Logged only by the
-  // single-iframe version of the NTP.
+  // loaded (in particular the thumbnail images). Logged by the single-iframe
+  // version of the NTP, and also by the multi-iframe version, but only as a
+  // workaround for crbug.com/698675.
   NTP_ALL_TILES_RECEIVED = 12,
 
   NTP_EVENT_TYPE_LAST = NTP_ALL_TILES_RECEIVED
 };
 
 #endif  // CHROME_COMMON_SEARCH_NTP_LOGGING_EVENTS_H_