Add UseCounter for decimal with leading zero.

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index ce3dd20d359310a1b89eda3d05c88551127537d8..86d66c056a6f5b9735507ae665d2c708e4fd23f7 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -943,6 +943,8 @@ FunctionLiteral* Parser::DoParseProgram(ParseInfo* info) {
 
     if (ok && is_strict(language_mode())) {
       CheckStrictOctalLiteral(beg_pos, scanner()->location().end_pos, &ok);
+      CheckDecimalLiteralWithLeadingZero(use_counts_, beg_pos,
+                                         scanner()->location().end_pos);
     }
     if (ok && is_sloppy(language_mode())) {
       // TODO(littledan): Function bindings on the global object that modify
@@ -4176,6 +4178,8 @@ FunctionLiteral* Parser::ParseFunctionLiteral(
     if (is_strict(language_mode)) {
       CheckStrictOctalLiteral(scope->start_position(), scope->end_position(),
                               CHECK_OK);
+      CheckDecimalLiteralWithLeadingZero(use_counts_, scope->start_position(),
+                                         scope->end_position());
     }
     if (is_sloppy(language_mode)) {
       InsertSloppyBlockFunctionVarBindings(scope, CHECK_OK);