[heap] Black allocation.

src/heap/incremental-marking.h

Index: src/heap/incremental-marking.h
diff --git a/src/heap/incremental-marking.h b/src/heap/incremental-marking.h
index 7a53462f7c69c4b4a65304eef513be9b9a9ae8e3..f36f2556c302e27de6928e136faf329cf9c2b8f0 100644
--- a/src/heap/incremental-marking.h
+++ b/src/heap/incremental-marking.h
@@ -210,7 +210,9 @@ class IncrementalMarking {
 
   bool IsIdleMarkingDelayCounterLimitReached();
 
-  INLINE(static void MarkObject(Heap* heap, HeapObject* object));
+  static void MarkObject(Heap* heap, HeapObject* object);
+
+  void IterateBlackObject(HeapObject* object);
 
   Heap* heap() const { return heap_; }
 
@@ -218,6 +220,8 @@ class IncrementalMarking {
     return &incremental_marking_job_;
   }
 
+  bool black_allocation() { return black_allocation_; }
+
  private:
   class Observer : public InlineAllocationObserver {
    public:
@@ -242,6 +246,9 @@ class IncrementalMarking {
 
   void StartMarking();
 
+  void StartBlackAllocation();
+  void FinishBlackAllocation();
+
   void MarkRoots();
   void MarkObjectGroups();
   void ProcessWeakCells();
@@ -294,6 +301,8 @@ class IncrementalMarking {
 
   bool was_activated_;
 
+  bool black_allocation_;
+
   bool finalize_marking_completed_;
 
   int incremental_marking_finalization_rounds_;