Remove descriptors pointer.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2555 matching lines @@
   inline String* GetSortedKey(int descriptor_number);
   inline int GetSortedKeyIndex(int descriptor_number);
   inline void SetSortedKey(int pointer, int descriptor_number);
 
   // Accessor for complete descriptor.
   inline void Get(int descriptor_number, Descriptor* desc);
   inline void Set(int descriptor_number,
                   Descriptor* desc,
                   const WhitenessWitness&);
   inline void Set(int descriptor_number, Descriptor* desc);
-  inline void EraseDescriptor(Heap* heap, int descriptor_number);
 
   // Append automatically sets the enumeration index. This should only be used
   // to add descriptors in bulk at the end, followed by sorting the descriptor
   // array.
   inline void Append(Descriptor* desc, const WhitenessWitness&);
   inline void Append(Descriptor* desc);
 
   // Transfer a complete descriptor from the src descriptor array to this
   // descriptor array.
   void CopyFrom(int dst_index,
@@ skipping 2296 matching lines @@
   // [prototype]: implicit prototype object.
   DECL_ACCESSORS(prototype, Object)
 
   // [constructor]: points back to the function responsible for this map.
   DECL_ACCESSORS(constructor, Object)
 
   inline JSFunction* unchecked_constructor();
 
   // [instance descriptors]: describes the object.
   inline DescriptorArray* instance_descriptors();
-  inline JSGlobalPropertyCell* descriptors_pointer();
   MUST_USE_RESULT inline MaybeObject* SetDescriptors(
       DescriptorArray* descriptors);
   static void SetDescriptors(Handle<Map> map,
                              Handle<DescriptorArray> descriptors);
   MUST_USE_RESULT inline MaybeObject* InitializeDescriptors(
       DescriptorArray* descriptors);
 
   // [stub cache]: contains stubs compiled for this map.
   DECL_ACCESSORS(code_cache, Object)
 
@@ skipping 93 matching lines @@
   inline void set_owns_descriptors(bool is_shared);
 
   MUST_USE_RESULT MaybeObject* RawCopy(int instance_size);
   MUST_USE_RESULT MaybeObject* CopyWithPreallocatedFieldDescriptors();
   MUST_USE_RESULT MaybeObject* CopyDropDescriptors();
   MUST_USE_RESULT MaybeObject* CopyReplaceDescriptors(
       DescriptorArray* descriptors,
       String* name,
       TransitionFlag flag,
       int descriptor_index);
-  MUST_USE_RESULT MaybeObject* ShareDescriptor(Descriptor* descriptor);
+  MUST_USE_RESULT MaybeObject* ShareDescriptor(DescriptorArray* descriptors,
+                                               Descriptor* descriptor);
   MUST_USE_RESULT MaybeObject* CopyAddDescriptor(Descriptor* descriptor,
                                                  TransitionFlag flag);
   MUST_USE_RESULT MaybeObject* CopyInsertDescriptor(Descriptor* descriptor,
                                                     TransitionFlag flag);
-  MUST_USE_RESULT MaybeObject* CopyReplaceDescriptor(Descriptor* descriptor,
-                                                     int index,
-                                                     TransitionFlag flag);
+  MUST_USE_RESULT MaybeObject* CopyReplaceDescriptor(
+      DescriptorArray* descriptors,
+      Descriptor* descriptor,
+      int index,
+      TransitionFlag flag);
   MUST_USE_RESULT MaybeObject* CopyAsElementsKind(ElementsKind kind,
                                                   TransitionFlag flag);
 
   MUST_USE_RESULT MaybeObject* CopyNormalized(PropertyNormalizationMode mode,
                                               NormalizedMapSharingMode sharing);
 
   inline void AppendDescriptor(Descriptor* desc,
                                const DescriptorArray::WhitenessWitness&);
 
   // Returns a copy of the map, with all transitions dropped from the
@@ skipping 4013 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_