Merge VisitorScope to Visitor

third_party/WebKit/Source/platform/heap/MarkingVisitor.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MarkingVisitor_h
 #define MarkingVisitor_h
 
 #include "platform/heap/MarkingVisitorImpl.h"
 
 namespace blink {
 
 template <Visitor::MarkingMode Mode>
 class MarkingVisitor final : public Visitor, public MarkingVisitorImpl<MarkingVisitor<Mode>> {
 public:
     using Impl = MarkingVisitorImpl<MarkingVisitor<Mode>>;
     friend class MarkingVisitorImpl<MarkingVisitor<Mode>>;
 
-    MarkingVisitor()
-        : Visitor(Mode)
+    explicit MarkingVisitor(ThreadState* state)
+        : Visitor(state, Mode)
     {
     }
 
     void markHeader(HeapObjectHeader* header, TraceCallback callback) override
     {
         Impl::markHeader(header, header->payload(), callback);
     }
 
     void mark(const void* objectPointer, TraceCallback callback) override
     {
@@ skipping 43 matching lines @@
         // When doing a thread local GC, the marker checks if
         // the object resides in another thread's heap. If it
         // does, the object should not be marked & traced.
         return page->terminating();
     }
 };
 
 } // namespace blink
 
 #endif