Summary:
Simplifies medium usage. Clients report this value as an integer. Internally, we transform this integer as type (a set of valid strings).
Instead of transform this value in different places, do it once when the client query is received.
Reviewed By: antonk52
Differential Revision: D46358024
fbshipit-source-id: ecd2b6c6ccbe7c38787a89d4e2f81930c7b91864