Add per thread heap enabled MarkingVisitorImpl

third_party/WebKit/Source/platform/heap/Visitor.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 227 matching lines @@
 class PLATFORM_EXPORT Visitor : public VisitorHelper<Visitor> {
 public:
     friend class VisitorHelper<Visitor>;
     friend class InlinedGlobalMarkingVisitor;
 
     enum MarkingMode {
         // This is a default visitor. This is used for GCType=GCWithSweep
         // and GCType=GCWithoutSweep.
         GlobalMarking,
         // This visitor does not trace objects outside the heap of the
+        // GCing thread. This is the default visitor used for per thread heap
+        // enabled heaps.
+        ThreadLocalMarking,
+        // This visitor does not trace objects outside the heap of the
         // GCing thread. This is used for GCType=ThreadTerminationGC.
-        ThreadLocalMarking,
+        ThreadTerminationMarking,
         // This visitor just marks objects and ignores weak processing.
         // This is used for GCType=TakeSnapshot.
         SnapshotMarking,
         // This visitor is used to trace objects during weak processing.
         // This visitor is allowed to trace only already marked objects.
         WeakProcessing,
     };
 
     static PassOwnPtr<Visitor> create(ThreadState*, BlinkGC::GCType);
 
@@ skipping 63 matching lines @@
 private:
     static Visitor* fromHelper(VisitorHelper<Visitor>* helper) { return static_cast<Visitor*>(helper); }
 
     ThreadState* m_state;
     const MarkingMode m_markingMode;
 };
 
 } // namespace blink
 
 #endif // Visitor_h