Add content descriptions for blood type.

Currently blood types are mispronounced when using talkback, e.g. A+ is
pronounced "A plus" instead of "A positive".
Bug:27500988
Change-Id: I9e55692ffc6c75da72858993026c19bb4e9f396a
5 files changed
tree: c2c3aed073e108e5c456ca062b912af5b703eaca
  1. res/
  2. src/
  3. Android.mk
  4. AndroidManifest.xml