InlinedVisitor: Migrate frame to use inlined tracing

Source/core/frame/DOMTimerCoordinator.cpp

 // 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.
 
 #include "config.h"
 #include "core/frame/DOMTimerCoordinator.h"
 
 #include "core/dom/ExecutionContext.h"
 #include "core/frame/DOMTimer.h"
 
@@ skipping 29 matching lines @@
 
     m_timers.remove(timeoutID);
 }
 
 void DOMTimerCoordinator::didChangeTimerAlignmentInterval()
 {
     for (TimeoutMap::iterator iter = m_timers.begin(); iter != m_timers.end(); ++iter)
         iter->value->didChangeAlignmentInterval();
 }
 
-void DOMTimerCoordinator::trace(Visitor* visitor)
+DEFINE_TRACE(DOMTimerCoordinator)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_timers);
 #endif
 }
 
 int DOMTimerCoordinator::nextID()
 {
     while (true) {
         ++m_circularSequentialID;
 
         if (m_circularSequentialID <= 0)
             m_circularSequentialID = 1;
 
         if (!m_timers.contains(m_circularSequentialID))
             return m_circularSequentialID;
     }
 }
 
 } // namespace blink