Object.observe: generate change records for indexed properties.

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 1452 matching lines @@
 
   // Returns the constructor name (the name (possibly, inferred name) of the
   // function that was used to instantiate the object).
   String* constructor_name();
 
   inline PropertyAttributes GetPropertyAttribute(String* name);
   PropertyAttributes GetPropertyAttributeWithReceiver(JSReceiver* receiver,
                                                       String* name);
   PropertyAttributes GetLocalPropertyAttribute(String* name);
 
+  inline PropertyAttributes GetElementAttribute(uint32_t index);
+  PropertyAttributes GetElementAttributeWithReceiver(JSReceiver* receiver,
+                                                     uint32_t index);
+  inline PropertyAttributes GetLocalElementAttribute(uint32_t index);
+
   // Can cause a GC.
   inline bool HasProperty(String* name);
   inline bool HasLocalProperty(String* name);
   inline bool HasElement(uint32_t index);
+  inline bool HasLocalElement(uint32_t index);
 
   // Return the object's prototype (might be Heap::null_value()).
   inline Object* GetPrototype();
 
   // Return the constructor function (may be Heap::null_value()).
   inline Object* GetConstructor();
 
   // Set the object's prototype (only JSReceiver and null are allowed).
   MUST_USE_RESULT MaybeObject* SetPrototype(Object* value,
                                             bool skip_hidden_prototypes);
@@ skipping 194 matching lines @@
                                                          String* name,
                                                          bool continue_search);
   PropertyAttributes GetPropertyAttributeWithInterceptor(JSObject* receiver,
                                                          String* name,
                                                          bool continue_search);
   PropertyAttributes GetPropertyAttributeWithFailedAccessCheck(
       Object* receiver,
       LookupResult* result,
       String* name,
       bool continue_search);
+  PropertyAttributes GetLocalElementAttribute(uint32_t index);
 
   static void DefineAccessor(Handle<JSObject> object,
                              Handle<String> name,
                              Handle<Object> getter,
                              Handle<Object> setter,
                              PropertyAttributes attributes);
   // Can cause GC.
   MUST_USE_RESULT MaybeObject* DefineAccessor(String* name,
                                               Object* getter,
                                               Object* setter,
@@ skipping 7274 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_