Revert of Replace slots buffer with remembered set.

src/heap/store-buffer-inl.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_STORE_BUFFER_INL_H_
 #define V8_STORE_BUFFER_INL_H_
 
 #include "src/heap/heap.h"
 #include "src/heap/remembered-set.h"
 #include "src/heap/spaces-inl.h"
 #include "src/heap/store-buffer.h"
 
 namespace v8 {
 namespace internal {
 
+void LocalStoreBuffer::Record(Address addr) {
+  if (top_->is_full()) top_ = new Node(top_);
+  top_->buffer[top_->count++] = addr;
+}
+
+void LocalStoreBuffer::Process(StoreBuffer* store_buffer) {
+  Node* current = top_;
+  while (current != nullptr) {
+    for (int i = 0; i < current->count; i++) {
+      Address slot = current->buffer[i];
+      Page* page = Page::FromAnyPointerAddress(heap_, slot);
+      RememberedSet<OLD_TO_NEW>::Insert(page, slot);
+    }
+    current = current->next;
+  }
+}
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_STORE_BUFFER_INL_H_