Try Unicode decomposition for selecting fallback font

This patch finds an appropriate fallback font in the case where no font
directly maps the requested character, but a font does exist for the
character's canonical decomposition. This yields correct rendering of
compatibility characters such as U+FA70.

Bug: 15816880
Bug: 16856221
Change-Id: Idff8ed6b942fec992a0815a32028b95af091d0ee
1 file changed
tree: 22a2b71d1eaa186f1d0d6349271998c5c124175b
  1. include/
  2. libs/
  3. sample/