Introduce IsUndefined(Isolate*) and IsTheHole(Isolate*)

src/snapshot/serializer-common.cc

Index: src/snapshot/serializer-common.cc
diff --git a/src/snapshot/serializer-common.cc b/src/snapshot/serializer-common.cc
index 4afaa207d45954eed47bf51369cb1a71534d1546..ec97507edf565775769972c557ba9545c75480bb 100644
--- a/src/snapshot/serializer-common.cc
+++ b/src/snapshot/serializer-common.cc
@@ -67,7 +67,7 @@ void SerializerDeserializer::Iterate(Isolate* isolate, ObjectVisitor* visitor) {
     // During deserialization, the visitor populates the partial snapshot cache
     // and eventually terminates the cache with undefined.
     visitor->VisitPointer(&cache->at(i));
-    if (cache->at(i)->IsUndefined()) break;
+    if (cache->at(i)->IsUndefined(isolate)) break;
   }
 }