Remove marking visitors' shouldMarkObject().

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 {
 
 class MarkingVisitor final : public Visitor,
                              public MarkingVisitorImpl<MarkingVisitor> {
  public:
   using Impl = MarkingVisitorImpl<MarkingVisitor>;
-  friend class MarkingVisitorImpl<MarkingVisitor>;
 
-  explicit MarkingVisitor(ThreadState* state, Visitor::MarkingMode mode)
+  MarkingVisitor(ThreadState* state, Visitor::MarkingMode mode)
       : Visitor(state, mode) {}
 
   void markHeader(HeapObjectHeader* header, TraceCallback callback) override {
     Impl::markHeader(header, header->payload(), callback);
   }
 
   void mark(const void* objectPointer, TraceCallback callback) override {
     Impl::mark(objectPointer, callback);
   }
 
@@ skipping 30 matching lines @@
   }
 
   bool ensureMarked(const void* objectPointer) override {
     return Impl::ensureMarked(objectPointer);
   }
 
   void registerWeakCellWithCallback(void** cell,
                                     WeakCallback callback) override {
     Impl::registerWeakCellWithCallback(cell, callback);
   }
-
- protected:
-  inline bool shouldMarkObject(const void* objectPointer) const {
-    if (getMarkingMode() != ThreadLocalMarking)
-      return true;
-
-    BasePage* page = pageFromObject(objectPointer);
-    ASSERT(!page->orphaned());
-    // 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