If your friend tells you they have a disease, and you tell someone else, are you breaking HIPAA? No.
In order to break HIPAA you have to first be a covered entity. An example of a covered entity is a Doctor (or provider).
If you tell Google or Facebook that you have some kind of condition, that information is not covered by HIPAA because they are not a medical provider, and therefore have no legal obligation to keep that information private.