SaveCredentials does not to return the credentials that it has just saved. Returning a status will do.
Improved documentation.
PiperOrigin-RevId: 494280108
This class was only kept to satisfy MockClass requirements for cl/472776321.
The location::nearby::api::CredentialStorage class located under
platform/implementation/credential_storage.h contains virtual functions which
satisfy the same requirements. This CL will remove excess code.
PiperOrigin-RevId: 474643989