Revert "(Pre)Parser: Simplify NewExpression handling."

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index d1d9b615702dc9881a984a32cd82bd58d20739d0..b21c2754d57446b166bf0811505481642516c79a 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -638,8 +638,11 @@ class Parser : public ParserBase<ParserTraits> {
   Expression* ParseUnaryExpression(bool* ok);
   Expression* ParsePostfixExpression(bool* ok);
   Expression* ParseLeftHandSideExpression(bool* ok);
-  Expression* ParseMemberWithNewPrefixesExpression(bool* ok);
+  Expression* ParseNewExpression(bool* ok);
   Expression* ParseMemberExpression(bool* ok);
+  Expression* ParseNewPrefix(PositionStack* stack, bool* ok);
+  Expression* ParseMemberWithNewPrefixesExpression(PositionStack* stack,
+                                                   bool* ok);
   Expression* ParseArrayLiteral(bool* ok);
   Expression* ParseObjectLiteral(bool* ok);