[heap] Get rid of the wrapper in remembered-set.h

src/heap/scavenger-inl.h

 // Copyright 2015 the V8 project 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 V8_HEAP_SCAVENGER_INL_H_
 #define V8_HEAP_SCAVENGER_INL_H_
 
 #include "src/heap/scavenger.h"
 
 namespace v8 {
@@ skipping 19 matching lines @@
 
   object->GetHeap()->UpdateAllocationSite<Heap::kGlobal>(
       object, object->GetHeap()->global_pretenuring_feedback_);
 
   // AllocationMementos are unrooted and shouldn't survive a scavenge
   DCHECK(object->map() != object->GetHeap()->allocation_memento_map());
   // Call the slow part of scavenge object.
   return ScavengeObjectSlow(p, object);
 }
 
+SlotCallbackResult Scavenger::CheckAndScavengeObject(Heap* heap,
+                                                     Address slot_address) {
+  Object** slot = reinterpret_cast<Object**>(slot_address);
+  Object* object = *slot;
+  if (heap->InFromSpace(object)) {
+    HeapObject* heap_object = reinterpret_cast<HeapObject*>(object);
+    DCHECK(heap_object->IsHeapObject());
+
+    ScavengeObject(reinterpret_cast<HeapObject**>(slot), heap_object);
+
+    object = *slot;
+    // If the object was in from space before and is after executing the
+    // callback in to space, the object is still live.
+    // Unfortunately, we do not know about the slot. It could be in a
+    // just freed free space object.
+    if (heap->InToSpace(object)) {
+      return KEEP_SLOT;
+    }
+  } else {
+    DCHECK(!heap->InNewSpace(object));
+  }
+  return REMOVE_SLOT;
+}
 
 // static
 void StaticScavengeVisitor::VisitPointer(Heap* heap, HeapObject* obj,
                                          Object** p) {
   Object* object = *p;
   if (!heap->InNewSpace(object)) return;
   Scavenger::ScavengeObject(reinterpret_cast<HeapObject**>(p),
                             reinterpret_cast<HeapObject*>(object));
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_SCAVENGER_INL_H_