Return MaybeHandle from SetElement and DeleteElement.

src/handles.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 126 matching lines @@
 void FlattenString(Handle<String> string) {
   CALL_HEAP_FUNCTION_VOID(string->GetIsolate(), string->TryFlatten());
 }
 
 
 Handle<String> FlattenGetString(Handle<String> string) {
   CALL_HEAP_FUNCTION(string->GetIsolate(), string->TryFlatten(), String);
 }
 
 
-Handle<Object> DeleteProperty(Handle<JSObject> object, Handle<Object> key) {
-  Isolate* isolate = object->GetIsolate();
-  CALL_HEAP_FUNCTION(isolate,
-                     Runtime::DeleteObjectProperty(
-                         isolate, object, key, JSReceiver::NORMAL_DELETION),
-                     Object);
-}
-
-
-Handle<Object> ForceDeleteProperty(Handle<JSObject> object,
-                                   Handle<Object> key) {
-  Isolate* isolate = object->GetIsolate();
-  CALL_HEAP_FUNCTION(isolate,
-                     Runtime::DeleteObjectProperty(
-                         isolate, object, key, JSReceiver::FORCE_DELETION),
-                     Object);
-}
-
-
-Handle<Object> HasProperty(Handle<JSReceiver> obj, Handle<Object> key) {
-  Isolate* isolate = obj->GetIsolate();
-  CALL_HEAP_FUNCTION(isolate,
-                     Runtime::HasObjectProperty(isolate, obj, key), Object);
-}
-
-
 Handle<Object> GetProperty(Handle<JSReceiver> obj,
                            const char* name) {
   Isolate* isolate = obj->GetIsolate();
   Handle<String> str = isolate->factory()->InternalizeUtf8String(name);
   ASSERT(!str.is_null());
   return Object::GetPropertyOrElement(obj, str);
 }
 
 
 // Wrappers for scripts are kept alive and cached in weak global
@@ skipping 551 matching lines @@
                                    Handle<Code> code) {
   heap->EnsureWeakObjectToCodeTable();
   Handle<DependentCode> dep(heap->LookupWeakObjectToCodeDependency(*object));
   dep = DependentCode::Insert(dep, DependentCode::kWeaklyEmbeddedGroup, code);
   CALL_HEAP_FUNCTION_VOID(heap->isolate(),
                           heap->AddWeakObjectToCodeDependency(*object, *dep));
 }
 
 
 } }  // namespace v8::internal