Replace profile statistics preference count with AutofillCounter

chrome/browser/profiles/profile_statistics_common.h

Index: chrome/browser/profiles/profile_statistics_common.h
diff --git a/chrome/browser/profiles/profile_statistics_common.h b/chrome/browser/profiles/profile_statistics_common.h
index 5fad9cc49a95b104219087e3f4084e3db8f3f80c..0ea75b96e2e62f2ff357a527f5746dd89e0a2139 100644
--- a/chrome/browser/profiles/profile_statistics_common.h
+++ b/chrome/browser/profiles/profile_statistics_common.h
@@ -16,18 +16,16 @@ namespace profiles {
 extern const char kProfileStatisticsBrowsingHistory[];
 extern const char kProfileStatisticsPasswords[];
 extern const char kProfileStatisticsBookmarks[];
-extern const char kProfileStatisticsSettings[];
+extern const char kProfileStatisticsAutofill[];
 
 extern const std::array<const char*, 4> kProfileStatisticsCategories;
 
-// Definition of a single return value of |ProfileStatisticsCallback|. If
-// |success| is false, the statistics failed to load and |count| is undefined.
-// The data look like these: {"BrowsingHistory", 912, true},
-// {"Passwords", 71, true}, {"Bookmarks", 120, true}, {"Settings", 200, true}
+// Definition of a single return value of |ProfileStatisticsCallback|.
+// The data look like these: {"BrowsingHistory", 912},
+// {"Passwords", 71}, {"Bookmarks", 120}, {"Autofill", 200}.
 struct ProfileCategoryStat {
   std::string category;
   int count;
-  bool success;
 };
 
 // Definition of the return value of |ProfileStatisticsCallback|.