Use the HeapObjectIterator to scan-on-scavenge map pages.

src/store-buffer.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_H_
 #define V8_STORE_BUFFER_H_
 
 #include "src/allocation.h"
 #include "src/base/logging.h"
 #include "src/base/platform/platform.h"
@@ skipping 149 matching lines @@
   // visit_pointer_region callback.
   // If either visit_pointer_region or callback can cause an allocation
   // in old space and changes in allocation watermark then
   // can_preallocate_during_iteration should be set to true.
   void IteratePointersOnPage(
       PagedSpace* space,
       Page* page,
       RegionCallback region_callback,
       ObjectSlotCallback slot_callback);
 
-  void FindPointersToNewSpaceInMaps(
-    Address start,
-    Address end,
-    ObjectSlotCallback slot_callback,
-    bool clear_maps);
-
-  void FindPointersToNewSpaceInMapsRegion(
-    Address start,
-    Address end,
-    ObjectSlotCallback slot_callback,
-    bool clear_maps);
-
   void IteratePointersInStoreBuffer(ObjectSlotCallback slot_callback,
                                     bool clear_maps);
 
 #ifdef VERIFY_HEAP
   void VerifyPointers(LargeObjectSpace* space);
 #endif
 
   friend class StoreBufferRebuildScope;
   friend class DontMoveStoreBufferEntriesScope;
 };
@@ skipping 37 matching lines @@
   }
 
  private:
   StoreBuffer* store_buffer_;
   bool stored_state_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_STORE_BUFFER_H_