Simplify passing of AccessorInfo to interceptors:

src/arguments.h

Index: src/arguments.h
diff --git a/src/arguments.h b/src/arguments.h
index 3fed22311bf8474490e1a8fe3027a474b55354f9..d3d4e481a01a950d7a4f3a3836c2f4b45086915c 100644
--- a/src/arguments.h
+++ b/src/arguments.h
@@ -80,15 +80,14 @@ class CustomArguments : public Relocatable {
   inline CustomArguments(Object* data,
                          JSObject* self,
                          JSObject* holder) {
-    values_[3] = self;
-    values_[2] = holder;
-    values_[1] = Smi::FromInt(0);
+    values_[2] = self;
+    values_[1] = holder;
     values_[0] = data;
   }
   void IterateInstance(ObjectVisitor* v);
-  Object** end() { return values_ + 3; }
+  Object** end() { return values_ + 2; }
  private:
-  Object* values_[4];
+  Object* values_[3];
 };