Add UseCounter for Date.parse's legacy parse heuristics.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index fcf0c6deab2f04bd593a95b8a8274a819768be31..0d5bac6d504292b6e164e0d7506c2f41de5e42a5 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -3291,11 +3291,9 @@ double ParseDateTimeString(Handle<String> str) {
   String::FlatContent str_content = str->GetFlatContent();
   bool result;
   if (str_content.IsOneByte()) {
-    result = DateParser::Parse(str_content.ToOneByteVector(), *tmp,
-                               isolate->unicode_cache());
+    result = DateParser::Parse(isolate, str_content.ToOneByteVector(), *tmp);
   } else {
-    result = DateParser::Parse(str_content.ToUC16Vector(), *tmp,
-                               isolate->unicode_cache());
+    result = DateParser::Parse(isolate, str_content.ToUC16Vector(), *tmp);
   }
   if (!result) return std::numeric_limits<double>::quiet_NaN();
   double const day = MakeDay(tmp->get(0)->Number(), tmp->get(1)->Number(),