Template methods on Timer classes instead of the classes themselves.

components/proximity_auth/remote_device_life_cycle_impl.h

 // Copyright 2015 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.
 
 #ifndef COMPONENTS_PROXIMITY_AUTH_REMOTE_DEVICE_LIFE_CYCLE_IMPL_H
 #define COMPONENTS_PROXIMITY_AUTH_REMOTE_DEVICE_LIFE_CYCLE_IMPL_H
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
@@ skipping 90 matching lines @@
   // Context for encrypting and decrypting messages. Created after
   // authentication succeeds. Ownership is eventually passed to |messenger_|.
   scoped_ptr<SecureContext> secure_context_;
 
   // The messenger for sending and receiving messages in the
   // SECURE_CHANNEL_ESTABLISHED state.
   scoped_ptr<Messenger> messenger_;
 
   // After authentication fails, this timer waits for a period of time before
   // retrying the connection.
-  base::OneShotTimer<RemoteDeviceLifeCycleImpl> authentication_recovery_timer_;
+  base::OneShotTimer authentication_recovery_timer_;
 
   base::WeakPtrFactory<RemoteDeviceLifeCycleImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RemoteDeviceLifeCycleImpl);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_REMOTE_DEVICE_LIFE_CYCLE_IMPL_H