[turbofan] Some more cleanup on the intrinsics.

src/code-factory.h

Index: src/code-factory.h
diff --git a/src/code-factory.h b/src/code-factory.h
index 0dab7080e7b93d62aa3d6d88b4cad309ad9b6a6a..8fa17583b9c8e8212368a24b0eb6864c222bfc2e 100644
--- a/src/code-factory.h
+++ b/src/code-factory.h
@@ -75,10 +75,12 @@ class CodeFactory final {
   static Callable NumberToString(Isolate* isolate);
 
   static Callable RegExpConstructResult(Isolate* isolate);
+  static Callable RegExpExec(Isolate* isolate);
 
   static Callable StringAdd(Isolate* isolate, StringAddFlags flags,
                             PretenureFlag pretenure_flag);
   static Callable StringCompare(Isolate* isolate);
+  static Callable SubString(Isolate* isolate);
 
   static Callable Typeof(Isolate* isolate);