[strong] Disallow implicit conversions for binary arithmetic operations

src/ic/ic.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_IC_H_
 #define V8_IC_H_
 
 #include "src/ic/ic-state.h"
 #include "src/macro-assembler.h"
 
@@ skipping 664 matching lines @@
 
   friend class IC;
 };
 
 
 // Type Recording BinaryOpIC, that records the types of the inputs and outputs.
 class BinaryOpIC : public IC {
  public:
   explicit BinaryOpIC(Isolate* isolate) : IC(EXTRA_CALL_FRAME, isolate) {}
 
-  static Builtins::JavaScript TokenToJSBuiltin(Token::Value op);
+  static Builtins::JavaScript TokenToJSBuiltin(Token::Value op,
+                                               LanguageMode language_mode);
 
   MaybeHandle<Object> Transition(Handle<AllocationSite> allocation_site,
                                  Handle<Object> left,
                                  Handle<Object> right) WARN_UNUSED_RESULT;
 };
 
 
 class CompareIC : public IC {
  public:
   CompareIC(Isolate* isolate, Token::Value op)
@@ skipping 69 matching lines @@
 
 // Support functions for interceptor handlers.
 DECLARE_RUNTIME_FUNCTION(LoadPropertyWithInterceptorOnly);
 DECLARE_RUNTIME_FUNCTION(LoadPropertyWithInterceptor);
 DECLARE_RUNTIME_FUNCTION(LoadElementWithInterceptor);
 DECLARE_RUNTIME_FUNCTION(StorePropertyWithInterceptor);
 }
 }  // namespace v8::internal
 
 #endif  // V8_IC_H_