Add verification code to dependent code.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 756631068e719d0345e1889f9b2f63ff367237e8..6c3b732bdd07daacdbeb621cde254de679d2b54a 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -5029,9 +5029,6 @@ class DependentCode: public FixedArray {
     void Recompute(DependentCode* entries);
     int at(int i) { return start_indexes_[i]; }
     int number_of_entries() { return start_indexes_[kGroupCount]; }
-    int number_of_code_entries() {
-      return start_indexes_[kGroupCount];
-    }
    private:
     int start_indexes_[kGroupCount + 1];
   };