firestore change

Author: wu-hui

packages/firestore/test/integration/api/database.test.ts

@@ -831,6 +831,7 @@ apiDescribe('Database', persistence => {
           expect(snap.data()).to.deep.equal(changedData);
           // This event could be a metadata change for fromCache as well.
           // We comment this line out to reduce flakiness.
+
           // TODO(b/295872012): Figure out a way to check for all scenarios.
           // expect(snap.metadata.hasPendingWrites).to.be.false;
         });