Save the native name on the function instead of finding it in the token stream for lazily-linked na…

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 5b2beafd917a68348092b40a863985287600f6f3..8ed036b5d9d6546b6b322b0141780a599ab868d3 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -2148,6 +2148,9 @@ class Function : public Object {
   void SetRegExpData(const JSRegExp& regexp,
                      intptr_t string_specialization_cid) const;
 
+  RawString* native_name() const;
+  void set_native_name(const String& name) const;
+
   RawAbstractType* result_type() const { return raw_ptr()->result_type_; }
   void set_result_type(const AbstractType& value) const;