message: refactor(components): use the new i18n api
diff: <p>{{ content }}</p>
  </div>
  <div class="modal-footer">
  - <button type="button" class="btn btn-default" @click="handleCancel">{{ i18n('cancel') }}</button>
  - <button type="button" class="btn btn-danger" @click="handleConfirm">{{ i18n('confirm') }}</button>
  + <button type="button" class="btn btn-default" @click="handleCancel">{{ $t('cancel') }}</button>
  + <button type="button" class="btn btn-danger" @click="handleConfirm">{{ $t('confirm') }}</button>
  </div>
  </div>
  </div>
  @@ -31,9 +31,6 @@ export default {
  }
  },
  methods: {
  - i18n (key) {
  - return chrome.i18n.getMessage(key)
  - },
  handleConfirm () {
  if (typeof this.onConfirm === 'function') {
  this.onConfirm()
  