Issue 501916 : Add data type counts to profile deletion flow

components/history/core/browser/history_backend.h

 // Copyright (c) 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 COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_BACKEND_H_
 #define COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_BACKEND_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 250 matching lines @@
                             MostVisitedURLList* result);
 
   // Request the |result_count| URLs and the chain of redirects
   // leading to each of these URLs, filterd and sorted based on the |filter|.
   // If |debug| is enabled, additional data will be computed and provided.
   void QueryFilteredURLs(int result_count,
                          const VisitFilter& filter,
                          bool debug,
                          FilteredURLList* result);
 
+  // Statistics ----------------------------------------------------------------
+
+  // Count the number of URLs in the browsing history

[Mike Lerman, 2015/08/07 19:37:12]

nit: trailing period please.

[lwchkg, 2015/08/09 16:11:49]

Acknowledged. Anyway we need to discuss the naming of this function and the
other two new functions in the history component, because the function names do
not match what they are actually doing now. To make discussion easy I'll post
the details in the next draft (should be ready tomorrow). We'll also need to
include James in the decision.

+  int CountURLs();
+
   // Favicon -------------------------------------------------------------------
 
   void GetFavicons(
       const std::vector<GURL>& icon_urls,
       int icon_types,
       const std::vector<int>& desired_sizes,
       std::vector<favicon_base::FaviconRawBitmapResult>* bitmap_results);
 
   void GetLargestFaviconForURL(
       const GURL& page_url,
@@ skipping 592 matching lines @@
 
   // List of observers
   base::ObserverList<HistoryBackendObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryBackend);
 };
 
 }  // namespace history
 
 #endif  // COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_BACKEND_H_