Template methods on Timer classes instead of the classes themselves.

chrome/browser/extensions/activity_log/activity_database.h

Index: chrome/browser/extensions/activity_log/activity_database.h
diff --git a/chrome/browser/extensions/activity_log/activity_database.h b/chrome/browser/extensions/activity_log/activity_database.h
index 9479f0d2f1be30d89369af6bc89cadb0571d4e36..2011f0ffbb3c04a8d57b21aff905285d84a2f070 100644
--- a/chrome/browser/extensions/activity_log/activity_database.h
+++ b/chrome/browser/extensions/activity_log/activity_database.h
@@ -188,7 +188,7 @@ class ActivityDatabase {
   bool valid_db_;
   bool batch_mode_;
   base::TimeDelta batching_period_;
-  base::RepeatingTimer<ActivityDatabase> timer_;
+  base::RepeatingTimer timer_;
   bool already_closed_;
   bool did_init_;