Template methods on Timer classes instead of the classes themselves.

ui/message_center/message_center_impl.cc

 // Copyright (c) 2013 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.
 
 #include "ui/message_center/message_center_impl.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/memory/scoped_vector.h"
@@ skipping 799 matching lines @@
     const base::TimeDelta& expires_in) {
   if (quiet_mode_timer_) {
     // Note that the capital Reset() is the method to restart the timer, not
     // scoped_ptr::reset().
     quiet_mode_timer_->Reset();
   } else {
     notification_list_->SetQuietMode(true);
     FOR_EACH_OBSERVER(
         MessageCenterObserver, observer_list_, OnQuietModeChanged(true));
 
-    quiet_mode_timer_.reset(new base::OneShotTimer<MessageCenterImpl>);
+    quiet_mode_timer_.reset(new base::OneShotTimer);
     quiet_mode_timer_->Start(
         FROM_HERE,
         expires_in,
         base::Bind(
             &MessageCenterImpl::SetQuietMode, base::Unretained(this), false));
   }
 }
 
 void MessageCenterImpl::RestartPopupTimers() {
   if (popup_timers_controller_)
     popup_timers_controller_->StartAll();
 }
 
 void MessageCenterImpl::PausePopupTimers() {
   if (popup_timers_controller_)
     popup_timers_controller_->PauseAll();
 }
 
 void MessageCenterImpl::DisableTimersForTest() {
   popup_timers_controller_.reset();
 }
 
 }  // namespace message_center