Oilpan: Remove GC_INFO_{DEFINE,DECLARE} macros

Source/core/testing/GCObservation.cpp

 /*
  * 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 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/testing/GCObservation.h"
 
 namespace WebCore {
 
-DEFINE_GC_INFO(GCObservation);
-
 static void setWeakCallback(const v8::WeakCallbackData<v8::Value, GCObservation>& data)
 {
     data.GetParameter()->setWasCollected();
 }
 
 void GCObservation::setWasCollected()
 {
     ASSERT(!wasCollected());
     m_observed.clear();
     m_collected = true;
 }
 
 GCObservation::GCObservation(v8::Handle<v8::Value> observedValue)
     : m_observed(v8::Isolate::GetCurrent(), observedValue)
     , m_collected(false)
 {
     m_observed.setWeak(this, setWeakCallback);
 }
 
 } // namespace WebCore