[proxies] allow duplicate keys for [[OwnPropertyKeys]] trap.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index 6b6c4acd09dfb1b5217bcab016c99724321a3c6f..8d5f74de0bd731ace07307b85ada457df907da9a 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -1588,7 +1588,7 @@ BUILTIN(ObjectAssign) {
     // 4b ii. Let keys be ? from.[[OwnPropertyKeys]]().
     Handle<FixedArray> keys;
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-        isolate, keys, JSReceiver::GetKeys(from, JSReceiver::OWN_ONLY,
+        isolate, keys, JSReceiver::GetKeys(from, KeyCollectionType::OWN_ONLY,
                                            ALL_PROPERTIES, KEEP_NUMBERS));
     // 4c. Repeat for each element nextKey of keys in List order,
     for (int j = 0; j < keys->length(); ++j) {
@@ -1676,8 +1676,8 @@ Object* GetOwnPropertyKeys(Isolate* isolate,
                                      Object::ToObject(isolate, object));
   Handle<FixedArray> keys;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, keys, JSReceiver::GetKeys(receiver, JSReceiver::OWN_ONLY, filter,
-                                         CONVERT_TO_STRING));
+      isolate, keys, JSReceiver::GetKeys(receiver, KeyCollectionType::OWN_ONLY,
+                                         filter, CONVERT_TO_STRING));
   return *isolate->factory()->NewJSArrayWithElements(keys);
 }
 
@@ -1745,8 +1745,8 @@ BUILTIN(ObjectKeys) {
   Handle<FixedArray> keys;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, keys,
-      JSReceiver::GetKeys(receiver, JSReceiver::OWN_ONLY, ENUMERABLE_STRINGS,
-                          CONVERT_TO_STRING));
+      JSReceiver::GetKeys(receiver, KeyCollectionType::OWN_ONLY,
+                          ENUMERABLE_STRINGS, CONVERT_TO_STRING));
   return *isolate->factory()->NewJSArrayWithElements(keys);
 }
 
@@ -1760,8 +1760,8 @@ BUILTIN(ObjectValues) {
   Handle<FixedArray> keys;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, keys,
-      JSReceiver::GetKeys(receiver, JSReceiver::OWN_ONLY, ENUMERABLE_STRINGS,
-                          CONVERT_TO_STRING));
+      JSReceiver::GetKeys(receiver, KeyCollectionType::OWN_ONLY,
+                          ENUMERABLE_STRINGS, CONVERT_TO_STRING));
 
   for (int i = 0; i < keys->length(); ++i) {
     auto key = Handle<Name>::cast(FixedArray::get(*keys, i, isolate));
@@ -1786,8 +1786,8 @@ BUILTIN(ObjectEntries) {
   Handle<FixedArray> keys;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, keys,
-      JSReceiver::GetKeys(receiver, JSReceiver::OWN_ONLY, ENUMERABLE_STRINGS,
-                          CONVERT_TO_STRING));
+      JSReceiver::GetKeys(receiver, KeyCollectionType::OWN_ONLY,
+                          ENUMERABLE_STRINGS, CONVERT_TO_STRING));
 
   for (int i = 0; i < keys->length(); ++i) {
     auto key = Handle<Name>::cast(FixedArray::get(*keys, i, isolate));
@@ -2091,8 +2091,8 @@ BUILTIN(ReflectOwnKeys) {
   Handle<FixedArray> keys;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, keys, JSReceiver::GetKeys(Handle<JSReceiver>::cast(target),
-                                         JSReceiver::OWN_ONLY, ALL_PROPERTIES,
-                                         CONVERT_TO_STRING));
+                                         KeyCollectionType::OWN_ONLY,
+                                         ALL_PROPERTIES, CONVERT_TO_STRING));
   return *isolate->factory()->NewJSArrayWithElements(keys);
 }