[heap] Fix clearing markbit in LO space

src/heap/spaces.cc

 // 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.
 
 #include "src/heap/spaces.h"
 
 #include <utility>
 
 #include "src/base/bits.h"
 #include "src/base/platform/platform.h"
@@ skipping 3023 matching lines @@
   }
   return NULL;
 }
 
 
 void LargeObjectSpace::ClearMarkingStateOfLiveObjects() {
   LargePage* current = first_page_;
   while (current != NULL) {
     HeapObject* object = current->GetObject();
     DCHECK(ObjectMarking::IsBlack(object));
-    ObjectMarking::BlackToWhite(object);
+    ObjectMarking::ClearMarkBit(object);
     Page::FromAddress(object->address())->ResetProgressBar();
     Page::FromAddress(object->address())->ResetLiveBytes();
     current = current->next_page();
   }
 }
 
 void LargeObjectSpace::InsertChunkMapEntries(LargePage* page) {
   // Register all MemoryChunk::kAlignment-aligned chunks covered by
   // this large page in the chunk map.
   uintptr_t start = reinterpret_cast<uintptr_t>(page) / MemoryChunk::kAlignment;
@@ skipping 175 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 }  // namespace internal
 }  // namespace v8