[turbofan] Do not use the self reference for turbofan functions.

src/codegen.h

Index: src/codegen.h
diff --git a/src/codegen.h b/src/codegen.h
index c49fd8825cabcb507772a64332dd4c4fa8e379d5..d5da1e3cf6b0a171b3cc8cb4039bb45900098c0e 100644
--- a/src/codegen.h
+++ b/src/codegen.h
@@ -79,7 +79,8 @@ class CodeGenerator {
   // Allocate and install the code.
   static Handle<Code> MakeCodeEpilogue(MacroAssembler* masm,
                                        EhFrameWriter* unwinding,
-                                       CompilationInfo* info);
+                                       CompilationInfo* info,
+                                       bool is_self_ref_available = true);
 
   // Print the code after compiling it.
   static void PrintCode(Handle<Code> code, CompilationInfo* info);