[heap] Unregister shrinked large object memory from chunk map.

src/heap/spaces.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_HEAP_SPACES_H_
 #define V8_HEAP_SPACES_H_
 
 #include <list>
 
 #include "src/allocation.h"
@@ skipping 3033 matching lines @@
   // Finds a large object page containing the given address, returns NULL
   // if such a page doesn't exist.
   LargePage* FindPage(Address a);
 
   // Clears the marking state of live objects.
   void ClearMarkingStateOfLiveObjects();
 
   // Frees unmarked objects.
   void FreeUnmarkedObjects();
 
+  void InsertChunkMapEntries(LargePage* page);
+  void RemoveChunkMapEntries(LargePage* page);
+  void RemoveChunkMapEntries(LargePage* page, Address free_start);
+
   // Checks whether a heap object is in this space; O(1).
   bool Contains(HeapObject* obj);
   // Checks whether an address is in the object area in this space. Iterates
   // all objects in the space. May be slow.
   bool ContainsSlow(Address addr) { return FindObject(addr)->IsHeapObject(); }
 
   // Checks whether the space is empty.
   bool IsEmpty() { return first_page_ == NULL; }
 
   void AdjustLiveBytes(int by) { objects_size_ += by; }
@@ skipping 83 matching lines @@
     count = 0;
   }
   // Must be small, since an iteration is used for lookup.
   static const int kMaxComments = 64;
 };
 #endif
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_SPACES_H_