Add API for access checks on observed objects

src/objects-debug.cc

 // 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 692 matching lines @@
   CHECK(IsAccessorPair());
   VerifyPointer(getter());
   VerifyPointer(setter());
 }
 
 
 void AccessCheckInfo::AccessCheckInfoVerify() {
   CHECK(IsAccessCheckInfo());
   VerifyPointer(named_callback());
   VerifyPointer(indexed_callback());
+  VerifyPointer(observe_callback());
   VerifyPointer(data());
 }
 
 
 void InterceptorInfo::InterceptorInfoVerify() {
   CHECK(IsInterceptorInfo());
   VerifyPointer(getter());
   VerifyPointer(setter());
   VerifyPointer(query());
   VerifyPointer(deleter());
@@ skipping 282 matching lines @@
   for (int i = 0; i < number_of_transitions(); ++i) {
     if (!CheckOneBackPointer(current_map, GetTarget(i))) return false;
   }
   return true;
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal