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

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 23c0f5b9ab7628e7a8ba7441aa72f8e716bf7b5a..e50f88d15a26d0c3038fd743bfc1f6aab20f65b5 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -1236,7 +1236,7 @@ Handle<JSFunction> Factory::NewFunction(Handle<Map> map,
   Handle<SharedFunctionInfo> info =
       NewSharedFunctionInfo(name, code, map->is_constructor());
   DCHECK(is_sloppy(info->language_mode()));
-  DCHECK(!map->IsUndefined());
+  DCHECK(!map->IsUndefined(isolate()));
   DCHECK(
       map.is_identical_to(isolate()->sloppy_function_map()) ||
       map.is_identical_to(isolate()->sloppy_function_without_prototype_map()) ||
@@ -2216,7 +2216,7 @@ Handle<String> Factory::NumberToString(Handle<Object> number,
   isolate()->counters()->number_to_string_runtime()->Increment();
   if (check_number_string_cache) {
     Handle<Object> cached = GetNumberStringCache(number);
-    if (!cached->IsUndefined()) return Handle<String>::cast(cached);
+    if (!cached->IsUndefined(isolate())) return Handle<String>::cast(cached);
   }
 
   char arr[100];
@@ -2322,7 +2322,7 @@ Handle<Map> Factory::ObjectLiteralMapFromCache(Handle<Context> context,
 
   int cache_index = number_of_properties - 1;
   Handle<Object> maybe_cache(context->map_cache(), isolate());
-  if (maybe_cache->IsUndefined()) {
+  if (maybe_cache->IsUndefined(isolate())) {
     // Allocate the new map cache for the native context.
     maybe_cache = NewFixedArray(kMapCacheSize, TENURED);
     context->set_map_cache(*maybe_cache);