Visit encountered JSWeakCollection list during scavenging.

src/mark-compact.h

 // 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.
 
 #ifndef V8_MARK_COMPACT_H_
 #define V8_MARK_COMPACT_H_
 
 #include "compiler-intrinsics.h"
 #include "spaces.h"
 
@@ skipping 631 matching lines @@
                          SlotsBuffer::AdditionMode mode =
                              SlotsBuffer::FAIL_ON_OVERFLOW));
 
   void MigrateObject(HeapObject* dst,
                      HeapObject* src,
                      int size,
                      AllocationSpace to_old_space);
 
   bool TryPromoteObject(HeapObject* object, int object_size);
 
-  inline Object* encountered_weak_collections() {
-    return encountered_weak_collections_;
-  }
-  inline void set_encountered_weak_collections(Object* weak_collection) {
-    encountered_weak_collections_ = weak_collection;
-  }
-
   void InvalidateCode(Code* code);
 
   void ClearMarkbits();
 
   bool abort_incremental_marking() const { return abort_incremental_marking_; }
 
   bool is_compacting() const { return compacting_; }
 
   MarkingParity marking_parity() { return marking_parity_; }
 
@@ skipping 237 matching lines @@
   friend class MarkObjectVisitor;
   static void VisitObject(HeapObject* obj);
 
   friend class UnmarkObjectVisitor;
   static void UnmarkObject(HeapObject* obj);
 #endif
 
   Heap* heap_;
   MarkingDeque marking_deque_;
   CodeFlusher* code_flusher_;
-  Object* encountered_weak_collections_;
   bool have_code_to_deoptimize_;
 
   List<Page*> evacuation_candidates_;
   List<Code*> invalidated_code_;
 
   SmartPointer<FreeList> free_list_old_data_space_;
   SmartPointer<FreeList> free_list_old_pointer_space_;
 
   friend class Heap;
 };
@@ skipping 57 matching lines @@
  private:
   MarkCompactCollector* collector_;
 };
 
 
 const char* AllocationSpaceName(AllocationSpace space);
 
 } }  // namespace v8::internal
 
 #endif  // V8_MARK_COMPACT_H_