Make profile statistics tasks inspectable by tests

chrome/browser/ui/webui/signin/user_manager_screen_handler.cc

Index: chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
diff --git a/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc b/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
index 2cc57cbdba2ad6636f1a3413fa4a884cbd8c047e..688f366d1643e1ccd10d96c12d0372eb909823ed 100644
--- a/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
+++ b/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
@@ -597,7 +597,7 @@ void UserManagerScreenHandler::HandleRemoveUserWarningLoadStats(
     // false), then the actual statistics are queried instead.
     base::DictionaryValue return_value;
     profiles::ProfileCategoryStats stats =
-        profiles::GetProfileStatisticsFromCache(profile_path);
+        ProfileStatistics::GetProfileStatisticsFromCache(profile_path);
     bool stats_success = true;
     for (const auto& item : stats) {
       scoped_ptr<base::DictionaryValue> stat(new base::DictionaryValue);
@@ -614,12 +614,11 @@ void UserManagerScreenHandler::HandleRemoveUserWarningLoadStats(
     }
   }
 
-  profiles::GatherProfileStatistics(
+  ProfileStatistics::GatherProfileStatistics(
       profile,
       base::Bind(
           &UserManagerScreenHandler::RemoveUserDialogLoadStatsCallback,
-          weak_ptr_factory_.GetWeakPtr(), profile_path),
-      &tracker_);
+          weak_ptr_factory_.GetWeakPtr(), profile_path));
 }
 
 void UserManagerScreenHandler::RemoveUserDialogLoadStatsCallback(
@@ -909,7 +908,7 @@ void UserManagerScreenHandler::SendUserList() {
         kKeyAvatarUrl, GetAvatarImageAtIndex(i, info_cache));
 
     profiles::ProfileCategoryStats stats =
-        profiles::GetProfileStatisticsFromCache(profile_path);
+        ProfileStatistics::GetProfileStatisticsFromCache(profile_path);
     scoped_ptr<base::DictionaryValue> stats_dict(new base::DictionaryValue);
     for (const auto& item : stats) {
       scoped_ptr<base::DictionaryValue> stat(new base::DictionaryValue);