Clear out some minor TODOs.

BUG=none

Review URL: https://codereview.chromium.org/1047063002

Cr-Commit-Position: refs/heads/master@{#322959}
void SelectComboboxValueOrSetToDefault(views::Combobox* combobox,
                                       const base::string16& value) {
  if (!combobox->SelectValue(value))
    combobox->SetSelectedIndex(combobox->model()->GetDefaultIndex());
}

void SelectComboboxValueOrSetToDefault(views::Combobox* combobox,
                                       const base::string16& value) {
  if (!combobox->SelectValue(value))
    combobox->SetSelectedIndex(combobox->model()->GetDefaultIndex());
}
