Centralize and standardize logic for ExpressionClassifier accumulation

src/parsing/preparser.cc

Index: src/parsing/preparser.cc
diff --git a/src/parsing/preparser.cc b/src/parsing/preparser.cc
index 33123a7f6fb1812bcb0d0366df5412c16a4a566f..f49e96c04d90511a9a0385e150ec0861ffd96c6b 100644
--- a/src/parsing/preparser.cc
+++ b/src/parsing/preparser.cc
@@ -1168,8 +1168,8 @@ PreParserExpression PreParser::ParseClassLiteral(
     CheckNoTailCallExpressions(&extends_classifier, CHECK_OK);
     ValidateExpression(&extends_classifier, CHECK_OK);
     if (classifier != nullptr) {
-      classifier->Accumulate(&extends_classifier,
-                             ExpressionClassifier::ExpressionProductions);
+      classifier->AccumulateFormalParameterContainmentErrors(
+          &extends_classifier);
     }
   }
 
@@ -1189,8 +1189,8 @@ PreParserExpression PreParser::ParseClassLiteral(
         &has_seen_constructor, &property_classifier, &name, CHECK_OK);
     ValidateExpression(&property_classifier, CHECK_OK);
     if (classifier != nullptr) {
-      classifier->Accumulate(&property_classifier,
-                             ExpressionClassifier::ExpressionProductions);
+      classifier->AccumulateFormalParameterContainmentErrors(
+          &property_classifier);
     }
   }