Remove distinction between hidden and normal runtime functions

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index 6c3e3c742b3507b45497550afcc712e52b502c96..512abe3dff497ec54e60ffa6f2a44ae2afde5599 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -1684,12 +1684,12 @@ const char* Builtins::Lookup(byte* pc) {
 
 
 void Builtins::Generate_InterruptCheck(MacroAssembler* masm) {
-  masm->TailCallRuntime(Runtime::kHiddenInterrupt, 0, 1);
+  masm->TailCallRuntime(Runtime::kInterrupt, 0, 1);
 }
 
 
 void Builtins::Generate_StackCheck(MacroAssembler* masm) {
-  masm->TailCallRuntime(Runtime::kHiddenStackGuard, 0, 1);
+  masm->TailCallRuntime(Runtime::kStackGuard, 0, 1);
 }