Migrate away from a deprecated Direct2D method.

piet-direct2d/src/text.rs

@@ -487,7 +487,7 @@ fn resolve_family_name(family: &FontFamily) -> &str {
 impl LoadedFontsInner {
  fn add(&mut self, font_data: &[u8]) -> Result<FontFamily, Error> {
  let font_data: Arc<Vec<u8>> = Arc::new(font_data.to_owned());
- let font_file = FontFile::new_from_data(font_data).ok_or(Error::FontLoadingFailed)?;
+ let font_file = FontFile::new_from_buffer(font_data).ok_or(Error::FontLoadingFailed)?;
  let collection_loader = CustomFontCollectionLoaderImpl::new(&[font_file.clone()]);
  let collection = FontCollection::from_loader(collection_loader);
  let mut families = collection.families_iter();