Handle Object.observe notifications for setting Array.length

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 2190 matching lines @@
   static const int kElementsOffset = kPropertiesOffset + kPointerSize;
   static const int kHeaderSize = kElementsOffset + kPointerSize;
 
   STATIC_CHECK(kHeaderSize == Internals::kJSObjectHeaderSize);
 
   class BodyDescriptor : public FlexibleBodyDescriptor<kPropertiesOffset> {
    public:
     static inline int SizeOf(Map* map, HeapObject* object);
   };
 
+  // Enqueue change record for Object.observe. May cause GC.
+  static void EnqueueChangeRecord(Handle<JSObject> object,
+                                  const char* type,
+                                  Handle<String> name,
+                                  Handle<Object> old_value);
+
  private:
   friend class DictionaryElementsAccessor;
 
   MUST_USE_RESULT MaybeObject* GetElementWithCallback(Object* receiver,
                                                       Object* structure,
                                                       uint32_t index,
                                                       Object* holder);
   MUST_USE_RESULT PropertyAttributes GetElementAttributeWithInterceptor(
       JSReceiver* receiver,
       uint32_t index,
@@ skipping 85 matching lines @@
   // for hidden properties.  If there is no backing store, allocate one.
   // If create_if_absent is false, return the hash table backing store
   // or the inline stored identity hash, whatever is found.
   MUST_USE_RESULT MaybeObject* GetHiddenPropertiesHashTable(
       InitializeHiddenProperties init_option);
   // Set the hidden property backing store to either a hash table or
   // the inline-stored identity hash.
   MUST_USE_RESULT MaybeObject* SetHiddenPropertiesHashTable(
       Object* value);
 
-  // Enqueue change record for Object.observe. May cause GC.
-  void EnqueueChangeRecord(const char* type,
-                           Handle<String> name,
-                           Handle<Object> old_value);
-
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSObject);
 };
 
 
 // Common superclass for FixedArrays that allow implementations to share
 // common accessors and some code paths.
 class FixedArrayBase: public HeapObject {
  public:
   // [length]: length of the array.
   inline int length();
@@ skipping 6705 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_