Introduce InlinedGlobalMarkingVisitor

Source/platform/heap/Heap.cpp

Index: Source/platform/heap/Heap.cpp
diff --git a/Source/platform/heap/Heap.cpp b/Source/platform/heap/Heap.cpp
index 96a3bebd1d58c422fb5e370da5f9d2f6b4f04d60..20ee685cf7633dbe8551158ad2c9f617f79a13fe 100644
--- a/Source/platform/heap/Heap.cpp
+++ b/Source/platform/heap/Heap.cpp
@@ -450,21 +450,6 @@ private:
 };
 
 NO_SANITIZE_ADDRESS inline
-bool HeapObjectHeader::isMarked() const
-{
-    checkHeader();
-    return m_size & markBitMask;
-}
-
-NO_SANITIZE_ADDRESS inline
-void HeapObjectHeader::mark()
-{
-    checkHeader();
-    ASSERT(!isMarked());
-    m_size = m_size | markBitMask;
-}
-
-NO_SANITIZE_ADDRESS inline
 void HeapObjectHeader::unmark()
 {
     checkHeader();
@@ -2027,6 +2012,12 @@ public:
             Heap::pushTraceCallback(m_markingStack, const_cast<void*>(objectPointer), callback);
     }
 
+    virtual void pushTraceCallback(void* objectPointer, TraceCallback callback)
+    {
+        ASSERT(callback);
+        Heap::pushTraceCallback(m_markingStack, objectPointer, callback);
+    }
+
     // We need both HeapObjectHeader and GeneralHeapObjectHeader versions to
     // correctly find the payload.
     virtual void mark(HeapObjectHeader* header, TraceCallback callback) override
@@ -2253,6 +2244,8 @@ public:
         return page->terminating();
     }
 
+    virtual bool isGlobalMarkingVisitor() override { return Mode == GlobalMarking; }
+
 protected:
     virtual void registerWeakCell(void** cell, WeakPointerCallback callback) override
     {