fix upstream changes

Author: zxu123

Firestore/core/test/firebase/firestore/auth/firebase_credentials_provider_test.mm

@@ -42,12 +42,14 @@
 
   FirebaseCredentialsProvider credentials_provider(app);
   credentials_provider.GetToken(
-      /*force_refresh=*/true, [](Token token, const absl::string_view error) {
+      /*force_refresh=*/true, [](Token token, const int64_t error_code,
+                                 const absl::string_view error_msg) {
         EXPECT_EQ("", token.token());
         const User& user = token.user();
         EXPECT_EQ("", user.uid());
         EXPECT_FALSE(user.is_authenticated());
-        EXPECT_EQ("", error) << error;
+        EXPECT_EQ(FirestoreErrorCode::Ok, error_code) << error_code;
+        EXPECT_EQ("", error_msg) << error_msg;
       });
 }