Move VisitorMarkingMode into Visitor.

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

 // Copyright 2017 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 VisitorImpl_h
 #define VisitorImpl_h
 
 #include "platform/heap/Heap.h"
 #include "platform/heap/ThreadState.h"
 #include "platform/heap/Visitor.h"
 #include "wtf/Allocator.h"
 
 namespace blink {
 
 inline void Visitor::markHeader(HeapObjectHeader* header,
                                 const void* objectPointer,
                                 TraceCallback callback) {
   DCHECK(header);
   DCHECK(objectPointer);
 
   if (header->isMarked())
     return;
 
   DCHECK(ThreadState::current()->isInGC());
-  DCHECK(getMarkingMode() != VisitorMarkingMode::WeakProcessing);
+  DCHECK(getMarkingMode() != WeakProcessing);
 
   // A GC should only mark the objects that belong in its heap.
   DCHECK(&pageFromObject(objectPointer)->arena()->getThreadState()->heap() ==
          &heap());
 
   header->mark();
 
   if (callback)
     heap().pushTraceCallback(const_cast<void*>(objectPointer), callback);
 }
 
 inline void Visitor::markHeader(HeapObjectHeader* header,
                                 TraceCallback callback) {
   markHeader(header, header->payload(), callback);
 }
 
 inline void Visitor::mark(const void* objectPointer, TraceCallback callback) {
   if (!objectPointer)
     return;
   HeapObjectHeader* header = HeapObjectHeader::fromPayload(objectPointer);
   markHeader(header, header->payload(), callback);
 }
 
 inline void Visitor::markHeaderNoTracing(HeapObjectHeader* header) {
   markHeader(header, header->payload(), reinterpret_cast<TraceCallback>(0));
 }
 
 inline void Visitor::registerDelayedMarkNoTracing(const void* objectPointer) {
-  DCHECK(getMarkingMode() != VisitorMarkingMode::WeakProcessing);
+  DCHECK(getMarkingMode() != WeakProcessing);
   heap().pushPostMarkingCallback(const_cast<void*>(objectPointer),
                                  &markNoTracingCallback);
 }
 
 inline void Visitor::registerWeakMembers(const void* closure,
                                          const void* objectPointer,
                                          WeakCallback callback) {
-  DCHECK(getMarkingMode() != VisitorMarkingMode::WeakProcessing);
+  DCHECK(getMarkingMode() != WeakProcessing);
   // We don't want to run weak processings when taking a snapshot.
-  if (getMarkingMode() == VisitorMarkingMode::SnapshotMarking)
+  if (getMarkingMode() == SnapshotMarking)
     return;
   heap().pushThreadLocalWeakCallback(
       const_cast<void*>(closure), const_cast<void*>(objectPointer), callback);
 }
 
 inline void Visitor::registerWeakTable(
     const void* closure,
     EphemeronCallback iterationCallback,
     EphemeronCallback iterationDoneCallback) {
-  DCHECK(getMarkingMode() != VisitorMarkingMode::WeakProcessing);
+  DCHECK(getMarkingMode() != WeakProcessing);
   heap().registerWeakTable(const_cast<void*>(closure), iterationCallback,
                            iterationDoneCallback);
 }
 
 #if DCHECK_IS_ON()
 inline bool Visitor::weakTableRegistered(const void* closure) {
   return heap().weakTableRegistered(closure);
 }
 #endif
 
 inline bool Visitor::ensureMarked(const void* objectPointer) {
   if (!objectPointer)
     return false;
 
   HeapObjectHeader* header = HeapObjectHeader::fromPayload(objectPointer);
   if (header->isMarked())
     return false;
 #if DCHECK_IS_ON()
   markNoTracing(objectPointer);
 #else
   // Inline what the above markNoTracing() call expands to,
   // so as to make sure that we do get all the benefits (asserts excepted.)
   header->mark();
 #endif
   return true;
 }
 
 inline void Visitor::registerWeakCellWithCallback(void** cell,
                                                   WeakCallback callback) {
-  DCHECK(getMarkingMode() != VisitorMarkingMode::WeakProcessing);
+  DCHECK(getMarkingMode() != WeakProcessing);
   // We don't want to run weak processings when taking a snapshot.
-  if (getMarkingMode() == VisitorMarkingMode::SnapshotMarking)
+  if (getMarkingMode() == SnapshotMarking)
     return;
   heap().pushGlobalWeakCallback(cell, callback);
 }
 
 inline void Visitor::registerBackingStoreReference(void* slot) {
-  if (getMarkingMode() != VisitorMarkingMode::GlobalMarkingWithCompaction)
+  if (getMarkingMode() != GlobalMarkingWithCompaction)
     return;
   heap().registerMovingObjectReference(
       reinterpret_cast<MovableReference*>(slot));
 }
 
 inline void Visitor::registerBackingStoreCallback(void* backingStore,
                                                   MovingObjectCallback callback,
                                                   void* callbackData) {
-  if (getMarkingMode() != VisitorMarkingMode::GlobalMarkingWithCompaction)
+  if (getMarkingMode() != GlobalMarkingWithCompaction)
     return;
   heap().registerMovingObjectCallback(
       reinterpret_cast<MovableReference>(backingStore), callback, callbackData);
 }
 
 }  // namespace blink
 
 #endif