Reduce the memory footprint of expression classifiers

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index b74c027842ecf174e339c0aeaea41844749ce9a5..fa9460a07231666af0dfcd70884fc8d3e68a0a0b 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -2518,7 +2518,6 @@ Statement* Parser::ParseExpressionOrLabelledStatement(
       ReportUnexpectedToken(Next());
       *ok = false;
       return nullptr;
-
     default:
       break;
   }
@@ -5602,13 +5601,19 @@ Expression* ParserTraits::RewriteAwaitExpression(Expression* value, int pos) {
                                       pos);
 }
 
-Zone* ParserTraits::zone() const {
-  return parser_->function_state_->scope()->zone();
+ZoneList<Expression*>* ParserTraits::GetNonPatternList() const {
+  return parser_->function_state_->non_patterns_to_rewrite();
 }
 
 
-ZoneList<Expression*>* ParserTraits::GetNonPatternList() const {
-  return parser_->function_state_->non_patterns_to_rewrite();
+ZoneList<typename ParserTraits::Type::ExpressionClassifier::Error>*
+ParserTraits::GetReportedErrorList() const {
+  return parser_->function_state_->GetReportedErrorList();
+}
+
+
+Zone* ParserTraits::zone() const {
+  return parser_->function_state_->scope()->zone();
 }