gecko/browser/components/places/content/organizer.css

.history-calendar {
  -moz-binding: url("chrome://browser/content/places/places.xml#calendar");
}

button.commandButton {
  -moz-binding: url("chrome://browser/content/places/places.xml#command-button");
}

.filterList {
  -moz-binding: url("chrome://browser/content/places/places.xml#filter-button");
}

#contentTitle {
  width: 0px;
}

#searchFilter {
  width: 23em;
}