Update Source/platform/ to assume Oilpan only.

third_party/WebKit/Source/platform/AsyncMethodRunner.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 102 matching lines @@
             m_timer.stop();
     }
 
     bool isActive() const
     {
         return m_timer.isActive();
     }
 
     DEFINE_INLINE_TRACE()
     {
-#if ENABLE(OILPAN)
         visitor->trace(m_object);
-#else
-        TraceIfNeeded<typename RawPtrOrMemberTrait<TargetClass>::Type>::trace(visitor, m_object);
-#endif
     }
 
 private:
     AsyncMethodRunner(TargetClass* object, TargetMethod method)
         : m_timer(this, &AsyncMethodRunner<TargetClass>::fired)
         , m_object(object)
         , m_method(method)
         , m_suspended(false)
         , m_runWhenResumed(false)
     {
     }
 
     void fired(Timer<AsyncMethodRunner<TargetClass>>*)
     {
         (m_object->*m_method)();
     }
 
     Timer<AsyncMethodRunner<TargetClass>> m_timer;
 
-#if ENABLE(OILPAN)
     Member<TargetClass> m_object;
-#else
-    typename RawPtrOrMemberTrait<TargetClass>::Type m_object;
-#endif
     TargetMethod m_method;
 
     bool m_suspended;
     bool m_runWhenResumed;
 };
 
 } // namespace blink
 
 #endif