Turn interrupt and stack check into builtins.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index ccd2cafab48c6f6f713df7c34b20c0ee3c4853a8..7c70583a76bfa2b2442c56fd1fe9eb5f35d3509e 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -449,30 +449,6 @@ class NopRuntimeCallHelper : public RuntimeCallHelper {
 };
 
 
-class StackCheckStub : public PlatformCodeStub {
- public:
-  StackCheckStub() { }
-
-  void Generate(MacroAssembler* masm);
-
- private:
-  Major MajorKey() { return StackCheck; }
-  int MinorKey() { return 0; }
-};
-
-
-class InterruptStub : public PlatformCodeStub {
- public:
-  InterruptStub() { }
-
-  void Generate(MacroAssembler* masm);
-
- private:
-  Major MajorKey() { return Interrupt; }
-  int MinorKey() { return 0; }
-};
-
-
 class ToNumberStub: public HydrogenCodeStub {
  public:
   ToNumberStub() { }