Speedup JSReceiver::GetKeys

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index dd43f0fe5b08df6f813d7fabd23ed9880c8d1a33..662081f1a5c50b146e95a35261e8be182c2ba503 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -3532,6 +3532,7 @@ class ObjectHashTable: public HashTable<ObjectHashTable,
   Object* Lookup(Handle<Object> key);
   Object* Lookup(Handle<Object> key, int32_t hash);
   Object* Lookup(Isolate* isolate, Handle<Object> key, int32_t hash);
+  bool HasKey(Isolate* isolate, Handle<Object> key);
 
   // Adds (or overwrites) the value associated with the given key.
   static Handle<ObjectHashTable> Put(Handle<ObjectHashTable> table,
@@ -3540,6 +3541,13 @@ class ObjectHashTable: public HashTable<ObjectHashTable,
   static Handle<ObjectHashTable> Put(Handle<ObjectHashTable> table,
                                      Handle<Object> key, Handle<Object> value,
                                      int32_t hash);
+  static Handle<ObjectHashTable> Put(Isolate* isolate,
+                                     Handle<ObjectHashTable> table,
+                                     Handle<Object> key, Handle<Object> value);
+  static Handle<ObjectHashTable> Put(Isolate* isolate,
+                                     Handle<ObjectHashTable> table,
+                                     Handle<Object> key, Handle<Object> value,
+                                     int32_t hash);
 
   // Returns an ObjectHashTable (possibly |table|) where |key| has been removed.
   static Handle<ObjectHashTable> Remove(Handle<ObjectHashTable> table,