Make the GC aware of JSReceiver pointers in LookupResults.

src/api.cc

 // Copyright 2011 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 3092 matching lines @@
 
 Local<Value> v8::Object::GetRealNamedPropertyInPrototypeChain(
       Handle<String> key) {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ON_BAILOUT(isolate,
              "v8::Object::GetRealNamedPropertyInPrototypeChain()",
              return Local<Value>());
   ENTER_V8(isolate);
   i::Handle<i::JSObject> self_obj = Utils::OpenHandle(this);
   i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
-  i::LookupResult lookup;
+  i::LookupResult lookup(isolate);
   self_obj->LookupRealNamedPropertyInPrototypes(*key_obj, &lookup);
   return GetPropertyByLookup(isolate, self_obj, key_obj, &lookup);
 }
 
 
 Local<Value> v8::Object::GetRealNamedProperty(Handle<String> key) {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ON_BAILOUT(isolate, "v8::Object::GetRealNamedProperty()",
              return Local<Value>());
   ENTER_V8(isolate);
   i::Handle<i::JSObject> self_obj = Utils::OpenHandle(this);
   i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
-  i::LookupResult lookup;
+  i::LookupResult lookup(isolate);
   self_obj->LookupRealNamedProperty(*key_obj, &lookup);
   return GetPropertyByLookup(isolate, self_obj, key_obj, &lookup);
 }
 
 
 // Turns on access checks by copying the map and setting the check flag.
 // Because the object gets a new map, existing inline cache caching
 // the old map of this object will fail.
 void v8::Object::TurnOnAccessCheck() {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
@@ skipping 2954 matching lines @@
 
 
 char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
   HandleScopeImplementer* scope_implementer =
       reinterpret_cast<HandleScopeImplementer*>(storage);
   scope_implementer->IterateThis(v);
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal