Devirtualize Visitor and remove inline visitor specialization.

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>;
-
-  MarkingVisitor(ThreadState* state, VisitorMarkingMode 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);
-  }
-
-  void registerDelayedMarkNoTracing(const void* object) override {
-    Impl::registerDelayedMarkNoTracing(object);
-  }
-
-  void registerWeakMembers(const void* closure,
-                           const void* objectPointer,
-                           WeakCallback callback) override {
-    Impl::registerWeakMembers(closure, objectPointer, callback);
-  }
-
-  virtual void registerWeakTable(const void* closure,
-                                 EphemeronCallback iterationCallback,
-                                 EphemeronCallback iterationDoneCallback) {
-    Impl::registerWeakTable(closure, iterationCallback, iterationDoneCallback);
-  }
-
-#if DCHECK_IS_ON()
-  virtual bool weakTableRegistered(const void* closure) {
-    return Impl::weakTableRegistered(closure);
-  }
-#endif
-
-  bool ensureMarked(const void* objectPointer) override {
-    return Impl::ensureMarked(objectPointer);
-  }
-
-  void registerWeakCellWithCallback(void** cell,
-                                    WeakCallback callback) override {
-    Impl::registerWeakCellWithCallback(cell, callback);
-  }
-};
-
-}  // namespace blink
-
-#endif