Introduce an API to force the deletion of a property ignoring...

src/api.cc

 // Copyright 2009 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 1873 matching lines @@
       self,
       key_obj,
       value_obj,
       static_cast<PropertyAttributes>(attribs));
   has_pending_exception = obj.is_null();
   EXCEPTION_BAILOUT_CHECK(false);
   return true;
 }
 
 
+bool v8::Object::ForceDelete(v8::Handle<Value> key) {
+  ON_BAILOUT("v8::Object::ForceDelete()", return false);
+  ENTER_V8;
+  i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
+  EXCEPTION_PREAMBLE();
+  i::Handle<i::Object> obj = i::ForceDeleteProperty(self, key_obj);
+  has_pending_exception = obj.is_null();
+  EXCEPTION_BAILOUT_CHECK(false);
+  return obj->IsTrue();
+}
+
+
 Local<Value> v8::Object::Get(v8::Handle<Value> key) {
   ON_BAILOUT("v8::Object::Get()", return Local<v8::Value>());
   ENTER_V8;
   i::Handle<i::Object> self = Utils::OpenHandle(this);
   i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
   EXCEPTION_PREAMBLE();
   i::Handle<i::Object> result = i::GetProperty(self, key_obj);
   has_pending_exception = result.is_null();
   EXCEPTION_BAILOUT_CHECK(Local<Value>());
   return Utils::ToLocal(result);
@@ skipping 1584 matching lines @@
       reinterpret_cast<HandleScopeImplementer*>(storage);
   List<void**>* blocks_of_archived_thread = thread_local->Blocks();
   v8::ImplementationUtilities::HandleScopeData* handle_data_of_archived_thread =
       &thread_local->handle_scope_data_;
   Iterate(v, blocks_of_archived_thread, handle_data_of_archived_thread);
 
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal