Add UseCounter for decimal with leading zero.

src/parsing/preparser.cc

Index: src/parsing/preparser.cc
diff --git a/src/parsing/preparser.cc b/src/parsing/preparser.cc
index 68372f841a7ea7811129db20ff93046c174dbbf2..b2732f553bf6b21aee80e7f94dba7b2ea888ff7a 100644
--- a/src/parsing/preparser.cc
+++ b/src/parsing/preparser.cc
@@ -134,6 +134,7 @@ PreParser::PreParseResult PreParser::PreParseLazyFunction(
     if (is_strict(scope_->language_mode())) {
       int end_pos = scanner()->location().end_pos;
       CheckStrictOctalLiteral(start_position, end_pos, &ok);
+      CheckDecimalLiteralWithLeadingZero(use_counts, start_position, end_pos);
       if (!ok) return kPreParseSuccess;
     }
   }
@@ -1106,6 +1107,8 @@ PreParser::Expression PreParser::ParseFunctionLiteral(
   if (is_strict(language_mode)) {
     int end_position = scanner()->location().end_pos;
     CheckStrictOctalLiteral(start_position, end_position, CHECK_OK);
+    CheckDecimalLiteralWithLeadingZero(use_counts_, start_position,
+                                       end_position);
   }
 
   return Expression::Default();