Make backing store for incremental marking deque non-static.

src/incremental-marking.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 31 matching lines @@
  public:
   enum State {
     STOPPED,
     SWEEPING,
     MARKING,
     COMPLETE
   };
 
   explicit IncrementalMarking(Heap* heap);
 
+  void TearDown();
+
   State state() {
     ASSERT(state_ == STOPPED || FLAG_incremental_marking);
     return state_;
   }
 
   bool should_hurry() { return should_hurry_; }
 
   inline bool IsStopped() { return state() == STOPPED; }
 
   inline bool IsMarking() { return state() >= MARKING; }
@@ skipping 103 matching lines @@
 #endif
 
   void StartMarking();
 
   void DeactivateWriteBarrierForSpace(PagedSpace* space);
   void DeactivateWriteBarrier();
 
   static void SetOldSpacePageFlags(MemoryChunk* chunk, bool is_marking);
   static void SetNewSpacePageFlags(MemoryChunk* chunk, bool is_marking);
 
+  void EnsureMarkingDequeIsCommitted();
+
   Heap* heap_;
 
   State state_;
+
+  VirtualMemory* marking_deque_memory_;
   MarkingDeque marking_deque_;
 
   int steps_count_;
   double steps_took_;
   bool should_hurry_;
   int allocation_marking_factor_;
   intptr_t allocated_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_INCREMENTAL_MARKING_H_