Make incremental marker post-process JSWeakCollection.

src/incremental-marking.cc

 // Copyright 2012 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.
 
 #include "v8.h"
 
 #include "incremental-marking.h"
 
 #include "code-stubs.h"
 #include "compilation-cache.h"
@@ skipping 214 matching lines @@
     // We will mark cache black with a separate pass when we finish marking.
     // Note that GC can happen when the context is not fully initialized,
     // so the cache can be undefined.
     Object* cache = context->get(Context::NORMALIZED_MAP_CACHE_INDEX);
     if (!cache->IsUndefined()) {
       MarkObjectGreyDoNotEnqueue(cache);
     }
     VisitNativeContext(map, context);
   }
 
-  static void VisitWeakCollection(Map* map, HeapObject* object) {
-    Heap* heap = map->GetHeap();
-    VisitPointers(heap,
-                  HeapObject::RawField(object,
-                                       JSWeakCollection::kPropertiesOffset),
-                  HeapObject::RawField(object, JSWeakCollection::kSize));
-  }
-
   INLINE(static void VisitPointer(Heap* heap, Object** p)) {
     Object* obj = *p;
     if (obj->IsHeapObject()) {
       heap->mark_compact_collector()->RecordSlot(p, p, obj);
       MarkObject(heap, obj);
     }
   }
 
   INLINE(static void VisitPointers(Heap* heap, Object** start, Object** end)) {
     for (Object** p = start; p < end; p++) {
@@ skipping 741 matching lines @@
   bytes_scanned_ = 0;
   write_barriers_invoked_since_last_step_ = 0;
 }
 
 
 int64_t IncrementalMarking::SpaceLeftInOldSpace() {
   return heap_->MaxOldGenerationSize() - heap_->PromotedSpaceSizeOfObjects();
 }
 
 } }  // namespace v8::internal