Remove indirection when calling Runtime_StackGuard.

src/builtins.h

Index: src/builtins.h
diff --git a/src/builtins.h b/src/builtins.h
index cbfa1d768816ded3715d6a441198d58a36a63232..6c072cb68802ac1cc39265eb9fd08ce79cfc84f0 100644
--- a/src/builtins.h
+++ b/src/builtins.h
@@ -221,8 +221,6 @@ enum BuiltinExtraArguments {
                                     Code::kNoExtraICState)              \
   V(InterruptCheck,                 BUILTIN, UNINITIALIZED,             \
                                     Code::kNoExtraICState)              \
-  V(StackCheck,                     BUILTIN, UNINITIALIZED,             \
-                                    Code::kNoExtraICState)              \
   CODE_AGE_LIST_WITH_ARG(DECLARE_CODE_AGE_BUILTIN, V)
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
@@ -408,7 +406,6 @@ class Builtins {
   static void Generate_OnStackReplacement(MacroAssembler* masm);
 
   static void Generate_InterruptCheck(MacroAssembler* masm);
-  static void Generate_StackCheck(MacroAssembler* masm);
 
 #define DECLARE_CODE_AGE_BUILTIN_GENERATOR(C)                \
   static void Generate_Make##C##CodeYoungAgainEvenMarking(   \