Add API for access checks on observed objects

src/objects-inl.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 4001 matching lines @@
 ACCESSORS(AccessorInfo, name, Object, kNameOffset)
 ACCESSORS_TO_SMI(AccessorInfo, flag, kFlagOffset)
 ACCESSORS(AccessorInfo, expected_receiver_type, Object,
           kExpectedReceiverTypeOffset)
 
 ACCESSORS(AccessorPair, getter, Object, kGetterOffset)
 ACCESSORS(AccessorPair, setter, Object, kSetterOffset)
 
 ACCESSORS(AccessCheckInfo, named_callback, Object, kNamedCallbackOffset)
 ACCESSORS(AccessCheckInfo, indexed_callback, Object, kIndexedCallbackOffset)
+ACCESSORS(AccessCheckInfo, observe_callback, Object, kObserveCallbackOffset)
 ACCESSORS(AccessCheckInfo, data, Object, kDataOffset)
 
 ACCESSORS(InterceptorInfo, getter, Object, kGetterOffset)
 ACCESSORS(InterceptorInfo, setter, Object, kSetterOffset)
 ACCESSORS(InterceptorInfo, query, Object, kQueryOffset)
 ACCESSORS(InterceptorInfo, deleter, Object, kDeleterOffset)
 ACCESSORS(InterceptorInfo, enumerator, Object, kEnumeratorOffset)
 ACCESSORS(InterceptorInfo, data, Object, kDataOffset)
 
 ACCESSORS(CallHandlerInfo, callback, Object, kCallbackOffset)
@@ skipping 1749 matching lines @@
 #undef WRITE_UINT32_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_