Template methods on Timer classes instead of the classes themselves.

components/invalidation/impl/registration_manager.h

 // Copyright 2014 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.
 //
 // A class that manages the registration of types for server-issued
 // notifications.
 
 #ifndef COMPONENTS_INVALIDATION_IMPL_REGISTRATION_MANAGER_H_
 #define COMPONENTS_INVALIDATION_IMPL_REGISTRATION_MANAGER_H_
 
@@ skipping 126 matching lines @@
     base::Time last_registration_request;
     // When we last tried to register.
     base::Time last_registration_attempt;
     // The calculated delay of any pending registration (which may be
     // negative).
     base::TimeDelta delay;
     // The minimum time to wait until any next registration attempt.
     // Increased after each consecutive failure.
     base::TimeDelta next_delay;
     // The actual timer for registration.
-    base::OneShotTimer<RegistrationStatus> registration_timer;
+    base::OneShotTimer registration_timer;
 
     DISALLOW_COPY_AND_ASSIGN(RegistrationStatus);
   };
   typedef std::map<invalidation::ObjectId,
                    RegistrationStatus*,
                    ObjectIdLessThan>
       RegistrationStatusMap;
 
   // Does nothing if the given id is disabled.  Otherwise, if
   // |is_retry| is not set, registers the given type immediately and
@@ skipping 21 matching lines @@
   RegistrationStatusMap registration_statuses_;
   // Weak pointer.
   invalidation::InvalidationClient* invalidation_client_;
 
   DISALLOW_COPY_AND_ASSIGN(RegistrationManager);
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_INVALIDATION_IMPL_REGISTRATION_MANAGER_H_