[heap] Remove black pages and use black areas instead.

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 7ecbf3581e1dc8b7b2d09cd7a01af2b05c69a9e7..05392c75d0309f4f0585a5ea9db789d3e30db981 100644
--- a/src/heap/incremental-marking.h
+++ b/src/heap/incremental-marking.h
@@ -208,12 +208,17 @@ class IncrementalMarking {
 
   static void TransferMark(Heap* heap, Address old_start, Address new_start);
 
-  // Returns true if the transferred color is black.
-  INLINE(static bool TransferColor(HeapObject* from, HeapObject* to)) {
-    if (Page::FromAddress(to->address())->IsFlagSet(Page::BLACK_PAGE))
-      return true;
+  // Returns true if the color transfer requires live bytes updating.
+  INLINE(static bool TransferColor(HeapObject* from, HeapObject* to,
+                                   int size)) {
     MarkBit from_mark_bit = ObjectMarking::MarkBitFrom(from);
     MarkBit to_mark_bit = ObjectMarking::MarkBitFrom(to);
+
+    if (Marking::IsBlack(to_mark_bit)) {
+      DCHECK(to->GetHeap()->incremental_marking()->black_allocation());
+      return false;
+    }
+
     DCHECK(Marking::IsWhite(to_mark_bit));
     if (from_mark_bit.Get()) {
       to_mark_bit.Set();