[strong] Disallow implicit conversions for binary arithmetic operations

src/code-factory.h

Index: src/code-factory.h
diff --git a/src/code-factory.h b/src/code-factory.h
index d1e2acdd44696152e553c0673c90dc59eea92f68..858cfbafa25415129880732113f758730fc138c2 100644
--- a/src/code-factory.h
+++ b/src/code-factory.h
@@ -52,7 +52,8 @@ class CodeFactory final {
 
   static Callable CompareIC(Isolate* isolate, Token::Value op);
 
-  static Callable BinaryOpIC(Isolate* isolate, Token::Value op);
+  static Callable BinaryOpIC(Isolate* isolate, Token::Value op,
+                             LanguageMode language_mode);
 
   // Code stubs. Add methods here as needed to reduce dependency on
   // code-stubs.h.