Fixes issue #1233 (#1224)

Author: samtstern

app/src/main/java/com/firebase/uidemo/auth/SignedInActivity.java

@@ -40,6 +40,7 @@
 import com.google.firebase.auth.EmailAuthProvider;
 import com.google.firebase.auth.FacebookAuthProvider;
 import com.google.firebase.auth.FirebaseAuth;
+import com.google.firebase.auth.FirebaseAuthProvider;
 import com.google.firebase.auth.FirebaseUser;
 import com.google.firebase.auth.GoogleAuthProvider;
 import com.google.firebase.auth.PhoneAuthProvider;
@@ -173,6 +174,9 @@ private void populateProfile() {
                     case PhoneAuthProvider.PROVIDER_ID:
                         providers.add(getString(R.string.providers_phone));
                         break;
+                    case FirebaseAuthProvider.PROVIDER_ID:
+                        // Ignore this provider, it's not very meaningful
+                        break;
                     default:
                         throw new IllegalStateException(
                                 "Unknown provider: " + info.getProviderId());