[stubs] Change CallICStub to utilize the ConvertReceiverMode.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index ef0682a74bfe58afa03ff031fff2d27f11cb3900..24023c93dfc1bca760e574a52fac312b30e9bdae 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -982,6 +982,7 @@ class CallICStub: public PlatformCodeStub {
 
  protected:
   int arg_count() const { return state().argc(); }
+  ConvertReceiverMode convert_mode() const { return state().convert_mode(); }
 
   CallICState state() const {
     return CallICState(static_cast<ExtraICState>(minor_key_));