Fix email -> Google smart lock credential not being deleted when user selects it (#837)

Author: SUPERCILEX

auth/src/main/java/com/firebase/ui/auth/util/signincontainer/SignInDelegate.java

@@ -16,10 +16,10 @@
 import com.firebase.ui.auth.IdpResponse;
 import com.firebase.ui.auth.R;
 import com.firebase.ui.auth.ResultCodes;
+import com.firebase.ui.auth.User;
 import com.firebase.ui.auth.ui.ExtraConstants;
 import com.firebase.ui.auth.ui.FlowParameters;
 import com.firebase.ui.auth.ui.TaskFailureLogger;
-import com.firebase.ui.auth.User;
 import com.firebase.ui.auth.ui.email.RegisterEmailActivity;
 import com.firebase.ui.auth.ui.idp.AuthMethodPickerActivity;
 import com.firebase.ui.auth.ui.phone.PhoneVerificationActivity;
@@ -40,6 +40,7 @@
 import com.google.firebase.auth.AuthResult;
 import com.google.firebase.auth.EmailAuthProvider;
 import com.google.firebase.auth.FacebookAuthProvider;
+import com.google.firebase.auth.FirebaseAuthInvalidCredentialsException;
 import com.google.firebase.auth.FirebaseAuthInvalidUserException;
 import com.google.firebase.auth.GoogleAuthProvider;
 import com.google.firebase.auth.PhoneAuthProvider;
@@ -289,7 +290,8 @@ public void onSuccess(AuthResult authResult) {
                 .addOnFailureListener(new OnFailureListener() {
                     @Override
                     public void onFailure(@NonNull Exception e) {
-                        if (e instanceof FirebaseAuthInvalidUserException) {
+                        if (e instanceof FirebaseAuthInvalidUserException
+                                || e instanceof FirebaseAuthInvalidCredentialsException) {
                             // In this case the credential saved in SmartLock was not
                             // a valid credential, we should delete it from SmartLock
                             // before continuing.