Add chrome://site-tiles-internals/

components/ntp_tiles/popular_sites.h

 // 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.
 
 #ifndef COMPONENTS_NTP_TILES_POPULAR_SITES_H_
 #define COMPONENTS_NTP_TILES_POPULAR_SITES_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 76 matching lines @@
 
   ~PopularSites() override;
 
   const std::vector<Site>& sites() const { return sites_; }
 
   // The URL of the file that was last downloaded.
   GURL LastURL() const;
 
   const base::FilePath& local_path() const { return local_path_; }
 
+  // Public for diagnostic pages only.
+  GURL GetURLToUse();
+  std::string GetCountryToUse();
+  std::string GetVersionToUse();

[Marc Treib, 2016/12/08 15:41:49]

const?

+
   // Register preferences used by this class.
   static void RegisterProfilePrefs(
       user_prefs::PrefRegistrySyncable* user_prefs);
 
  private:
   void OnReadFileDone(std::unique_ptr<std::string> data, bool success);
 
   // Fetch the popular sites at the given URL, overwriting any file that already
   // exists.
   void FetchPopularSites();
@@ skipping 25 matching lines @@
   GURL pending_url_;
 
   base::WeakPtrFactory<PopularSites> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PopularSites);
 };
 
 }  // namespace ntp_tiles
 
 #endif  // COMPONENTS_NTP_TILES_POPULAR_SITES_H_