Reverting 3174. Aka reapplying 3150, 3151 and 3159. Aka api accessor

src/codegen.h

Index: src/codegen.h
diff --git a/src/codegen.h b/src/codegen.h
index 8c1b7336756bb47252cfeb241a7e4921311ca1b5..fc4a53b2e73b0f98cbc349487a34c9d87e7e41c9 100644
--- a/src/codegen.h
+++ b/src/codegen.h
@@ -301,7 +301,7 @@ class CEntryStub : public CodeStub {
                     Label* throw_normal_exception,
                     Label* throw_termination_exception,
                     Label* throw_out_of_memory_exception,
-                    StackFrame::Type frame_type,
+                    ExitFrame::Mode mode,
                     bool do_gc,
                     bool always_allocate_scope);
   void GenerateThrowTOS(MacroAssembler* masm);
@@ -320,6 +320,32 @@ class CEntryStub : public CodeStub {
 };
 
 
+class ApiGetterEntryStub : public CodeStub {
+ public:
+  ApiGetterEntryStub(Handle<AccessorInfo> info,
+                     ApiFunction* fun)
+      : info_(info),
+        fun_(fun) { }
+  void Generate(MacroAssembler* masm);
+  virtual bool has_custom_cache() { return true; }
+  virtual bool GetCustomCache(Code** code_out);
+  virtual void SetCustomCache(Code* value);
+
+  static const int kStackSpace = 6;
+  static const int kArgc = 4;
+ private:
+  Handle<AccessorInfo> info() { return info_; }
+  ApiFunction* fun() { return fun_; }
+  Major MajorKey() { return NoCache; }
+  int MinorKey() { return 0; }
+  const char* GetName() { return "ApiEntryStub"; }
+  // The accessor info associated with the function.
+  Handle<AccessorInfo> info_;
+  // The function to be called.
+  ApiFunction* fun_;
+};
+
+
 class CEntryDebugBreakStub : public CEntryStub {
  public:
   CEntryDebugBreakStub() : CEntryStub(1) { }