[strong] Deprecate arguments

src/ast-value-factory.h

Index: src/ast-value-factory.h
diff --git a/src/ast-value-factory.h b/src/ast-value-factory.h
index 294a2818590d6486e3e4c0a4d197ea5d57d3d27b..fe333254bb7bc3d341a1018a8f5b95ce9cbc10bd 100644
--- a/src/ast-value-factory.h
+++ b/src/ast-value-factory.h
@@ -88,8 +88,6 @@ class AstRawString : public AstString {
     return *c;
   }
 
-  V8_INLINE bool IsArguments(AstValueFactory* ast_value_factory) const;
-
   // For storing AstRawStrings in a hash map.
   uint32_t hash() const {
     return hash_;
@@ -357,11 +355,6 @@ class AstValueFactory {
   OTHER_CONSTANTS(F)
 #undef F
 };
-
-
-bool AstRawString::IsArguments(AstValueFactory* ast_value_factory) const {
-  return ast_value_factory->arguments_string() == this;
-}
 } }  // namespace v8::internal
 
 #undef STRING_CONSTANTS