Revert of [heap] Use store buffer for writes coming from mutator.

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 5e9547f4785bd7e1a828aae3a764427684999459..5ee2d975a23ea2de9254ccd5e747f211971b4de2 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -5885,7 +5885,8 @@
     Address slot_addr = reinterpret_cast<Address>(slot);
     Page* page = Page::FromAddress(slot_addr);
     DCHECK_EQ(page->owner()->identity(), OLD_SPACE);
-    store_buffer()->DeleteEntry(slot_addr);
+    store_buffer()->MoveAllEntriesToRememberedSet();
+    RememberedSet<OLD_TO_NEW>::Remove(page, slot_addr);
     RememberedSet<OLD_TO_OLD>::Remove(page, slot_addr);
   }
 }
@@ -5894,7 +5895,9 @@
   Page* page = Page::FromAddress(start);
   if (!page->InNewSpace()) {
     DCHECK_EQ(page->owner()->identity(), OLD_SPACE);
-    store_buffer()->DeleteEntry(start, end);
+    store_buffer()->MoveAllEntriesToRememberedSet();
+    RememberedSet<OLD_TO_NEW>::RemoveRange(page, start, end,
+                                           SlotSet::PREFREE_EMPTY_BUCKETS);
     RememberedSet<OLD_TO_OLD>::RemoveRange(page, start, end,
                                            SlotSet::FREE_EMPTY_BUCKETS);
   }