[builtins] Construct builtin frame in String/Number ctors

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index d4aa9e3b1710d4fff65b72e6fcae0477436eab3c..b88fa855373cd9c3bbf3ae2d2f958d9982e7dcbf 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -1575,6 +1575,9 @@ class MacroAssembler: public Assembler {
   void EnterFrame(StackFrame::Type type, bool load_constant_pool_pointer_reg);
   void LeaveFrame(StackFrame::Type type);
 
+  void EnterBuiltinFrame(Register context, Register target, Register argc);
+  void LeaveBuiltinFrame(Register context, Register target, Register argc);
+
   // Expects object in rax and returns map with validated enum cache
   // in rax.  Assumes that any other register can be used as a scratch.
   void CheckEnumCache(Label* call_runtime);