Utilize ProfileInfoCache to support data type counts in profile deletion flow

chrome/browser/profiles/profile_statistics.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 CHROME_BROWSER_PROFILES_PROFILE_STATISTICS_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_STATISTICS_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 21 matching lines @@
 
 // Definition of the return value of |ProfileStatisticsCallback|.
 using ProfileCategoryStats = std::vector<ProfileCategoryStat>;
 
 // Definition of the callback function. Note that a copy of
 // |ProfileCategoryStats| is made each time the callback is called.
 using ProfileStatisticsCallback = base::Callback<void(ProfileCategoryStats)>;
 
 // Profile Statistics ----------------------------------------------------------
 
-// This function collects statistical information about |profile| and returns
-// the information via |callback|. Currently bookmarks, history, logins and
-// preferences are counted. The callback function will probably be called more
-// than once so binding parameters with bind::Passed() is prohibited.
-void GetProfileStatistics(Profile* profile,
-                          const ProfileStatisticsCallback& callback,
-                          base::CancelableTaskTracker* tracker);
+// This function collects statistical information about |profile|, also returns
+// the information via |callback| if |callback| is not null. The statistical
+// information is also copied to ProfileInfoCache. Currently bookmarks, history,
+// logins and preferences are counted. The callback function will probably be
+// called more than once, so binding parameters with bind::Passed() is
+// prohibited. Most of the async tasks involved in this function can be
+// cancelled if |tracker| is not null.
+void GatherProfileStatistics(Profile* profile,
+                             const ProfileStatisticsCallback& callback,
+                             base::CancelableTaskTracker* tracker);
 
 // ProfileInfoCache ------------------------------------------------------------
 
 // Gets statistical information from ProfileInfoCache.
 ProfileCategoryStats GetProfileStatisticsFromCache(
     const base::FilePath& profile_path);
 
 // Sets an individual statistic to ProfileInfoCache.
 void SetProfileStatisticsInCache(const base::FilePath& profile_path,
                                  const std::string& category, int count);
 
 }  // namespace profiles
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_STATISTICS_H_