Use Type in CheckPrototypes.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 1839699f2535ca4374adf2eacf552230b7b528f2..afb73b64f1b95dabf52353afd99594e9421965ce 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -6195,6 +6195,16 @@ class Map: public HeapObject {
   bool IsJSObjectMap() {
     return instance_type() >= FIRST_JS_OBJECT_TYPE;
   }
+  bool IsJSGlobalProxyMap() {
+    return instance_type() == JS_GLOBAL_PROXY_TYPE;
+  }
+  bool IsJSGlobalObjectMap() {
+    return instance_type() == JS_GLOBAL_OBJECT_TYPE;
+  }
+  bool IsGlobalObjectMap() {
+    const InstanceType type = instance_type();
+    return type == JS_GLOBAL_OBJECT_TYPE || type == JS_BUILTINS_OBJECT_TYPE;
+  }
 
   // Fires when the layout of an object with a leaf map changes.
   // This includes adding transitions to the leaf map or changing