Oilpan: GC profiling.

Source/platform/heap/Visitor.h

Index: Source/platform/heap/Visitor.h
diff --git a/Source/platform/heap/Visitor.h b/Source/platform/heap/Visitor.h
index ffadc80fe99aa42561c757d29f9432d498d39a52..f58a8a1842ad5f5985a82929f94982fdc44525b5 100644
--- a/Source/platform/heap/Visitor.h
+++ b/Source/platform/heap/Visitor.h
@@ -47,7 +47,7 @@
 #include "wtf/RefPtr.h"
 #include "wtf/TypeTraits.h"
 #include "wtf/WeakPtr.h"
-#if ENABLE(GC_TRACING)
+#if GC_PROFILE_DEFINE_CLASSNAME
 #include "wtf/text/WTFString.h"
 #endif
 
@@ -93,7 +93,7 @@ struct GCInfo {
     FinalizationCallback m_finalize;
     bool m_nonTrivialFinalizer;
     bool m_hasVTable;
-#if ENABLE(GC_TRACING)
+#if GC_PROFILE_DEFINE_CLASSNAME
     // |m_className| is held as a reference to prevent dtor being called at exit.
     const String& m_className;
 #endif
@@ -426,7 +426,7 @@ public:
     FOR_EACH_TYPED_HEAP(DECLARE_VISITOR_METHODS)
 #undef DECLARE_VISITOR_METHODS
 
-#if ENABLE(GC_TRACING)
+#if GC_PROFILE_MARKING
     void setHostInfo(void* object, const String& name)
     {
         m_hostObject = object;
@@ -436,7 +436,7 @@ public:
 
 protected:
     virtual void registerWeakCell(void**, WeakPointerCallback) = 0;
-#if ENABLE(GC_TRACING)
+#if GC_PROFILE_MARKING
     void* m_hostObject;
     String m_hostName;
 #endif
@@ -675,7 +675,7 @@ private:
 #define WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(TYPE)
 #endif
 
-#if ENABLE(GC_TRACING)
+#if GC_PROFILE_DEFINE_CLASSNAME
 template<typename T>
 struct TypenameStringTrait {
     static const String& get()
@@ -695,7 +695,7 @@ struct GCInfoAtBase {
             FinalizerTrait<T>::finalize,
             FinalizerTrait<T>::nonTrivialFinalizer,
             WTF::IsPolymorphic<T>::value,
-#if ENABLE(GC_TRACING)
+#if GC_PROFILE_DEFINE_CLASSNAME
             TypenameStringTrait<T>::get()
 #endif
         };