NewTabPage: Remove impression/click ping plumbing for local NTP

chrome/common/search/instant_types.h

 // Copyright 2012 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_INSTANT_TYPES_H_
 #define CHROME_COMMON_SEARCH_INSTANT_TYPES_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 123 matching lines @@
   // The title of the Most Visited page.  May be empty, in which case the |url|
   // is used as the title.
   base::string16 title;
 
   // The external URL of the thumbnail associated with this page.
   GURL thumbnail;
 
   // The external URL of the favicon associated with this page.
   GURL favicon;
 
-  // The external URL that should be pinged when this item is suggested/clicked.
-  GURL impression_url;
-  GURL click_url;
-
   // True if it's a server side suggestion.
   // Otherwise, it's a client side suggestion.
   bool is_server_side_suggestion;
 };
 
 // An InstantMostVisitedItem along with its assigned restricted ID.
 typedef std::pair<InstantRestrictedID, InstantMostVisitedItem>
     InstantMostVisitedItemIDPair;
 
 // Embedded search request logging stats params.
@@ skipping 26 matching lines @@
 
   // The optional assisted query stats, aka AQS, used for logging purposes.
   // This string contains impressions of all autocomplete matches shown
   // at the query submission time.  For privacy reasons, we require the
   // search provider to support HTTPS protocol in order to receive the AQS
   // param.
   // For more details, see http://goto.google.com/binary-clients-logging.
   base::string16 assisted_query_stats;
 };
 #endif  // CHROME_COMMON_SEARCH_INSTANT_TYPES_H_