Add demo_mode highlights to assert_no_js_errors() on Chrome

Author: mdmintz

seleniumbase/fixtures/base_case.py

@@ -1869,6 +1869,9 @@ def assert_no_js_errors(self):
             current_url = self.get_current_url()
             raise Exception(
                 "JavaScript errors found on %s => %s" % (current_url, errors))
+        if self.demo_mode and self.browser == 'chrome':
+            messenger_post = ("ASSERT NO JS ERRORS")
+            self.__highlight_with_assert_success(messenger_post, "html")
 
     def get_google_auth_password(self, totp_key=None):
         """ Returns a time-based one-time password based on the