Revert of [heap] Reland Concurrently free empty typed slot set chunks.

test/unittests/heap/slot-set-unittest.cc

Index: test/unittests/heap/slot-set-unittest.cc
diff --git a/test/unittests/heap/slot-set-unittest.cc b/test/unittests/heap/slot-set-unittest.cc
index 8db5b1a8fd2ac10bdf1a47d2fceb694b5f662bf8..9bf85071a655dbd106840fe66f94574b3c9a6ace 100644
--- a/test/unittests/heap/slot-set-unittest.cc
+++ b/test/unittests/heap/slot-set-unittest.cc
@@ -152,29 +152,24 @@
     ++added;
   }
   int iterated = 0;
-  set.Iterate(
-      [&iterated, kDelta, kHostDelta](SlotType type, Address host_addr,
-                                      Address addr) {
-        uint32_t i = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(addr));
-        uint32_t j =
-            static_cast<uint32_t>(reinterpret_cast<uintptr_t>(host_addr));
-        EXPECT_EQ(i % CLEARED_SLOT, static_cast<uint32_t>(type));
-        EXPECT_EQ(0, i % kDelta);
-        EXPECT_EQ(0, j % kHostDelta);
-        ++iterated;
-        return i % 2 == 0 ? KEEP_SLOT : REMOVE_SLOT;
-      },
-      TypedSlotSet::KEEP_EMPTY_CHUNKS);
+  set.Iterate([&iterated, kDelta, kHostDelta](SlotType type, Address host_addr,
+                                              Address addr) {
+    uint32_t i = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(addr));
+    uint32_t j = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(host_addr));
+    EXPECT_EQ(i % CLEARED_SLOT, static_cast<uint32_t>(type));
+    EXPECT_EQ(0, i % kDelta);
+    EXPECT_EQ(0, j % kHostDelta);
+    ++iterated;
+    return i % 2 == 0 ? KEEP_SLOT : REMOVE_SLOT;
+  });
   EXPECT_EQ(added, iterated);
   iterated = 0;
-  set.Iterate(
-      [&iterated](SlotType type, Address host_addr, Address addr) {
-        uint32_t i = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(addr));
-        EXPECT_EQ(0, i % 2);
-        ++iterated;
-        return KEEP_SLOT;
-      },
-      TypedSlotSet::KEEP_EMPTY_CHUNKS);
+  set.Iterate([&iterated](SlotType type, Address host_addr, Address addr) {
+    uint32_t i = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(addr));
+    EXPECT_EQ(0, i % 2);
+    ++iterated;
+    return KEEP_SLOT;
+  });
   EXPECT_EQ(added / 2, iterated);
 }