Template methods on Timer classes instead of the classes themselves.

chrome/browser/notifications/extension_welcome_notification.h

Index: chrome/browser/notifications/extension_welcome_notification.h
diff --git a/chrome/browser/notifications/extension_welcome_notification.h b/chrome/browser/notifications/extension_welcome_notification.h
index 728a1b9bf84612315f8ed123ca5563e80a532a2a..3e26c504094ba8b572394f36e4b155ea1c166179 100644
--- a/chrome/browser/notifications/extension_welcome_notification.h
+++ b/chrome/browser/notifications/extension_welcome_notification.h
@@ -152,8 +152,7 @@ class ExtensionWelcomeNotification
 
   // If the welcome notification is shown, this timer tracks when to hide the
   // welcome notification.
-  scoped_ptr<base::OneShotTimer<ExtensionWelcomeNotification> >
-      expiration_timer_;
+  scoped_ptr<base::OneShotTimer> expiration_timer_;
 
   // Delegate for Chrome global calls like base::Time::GetTime() for
   // testability.