Ensure that FormFetcher state is WAITING when waiting for migration

components/password_manager/core/browser/form_fetcher_impl.cc

Index: components/password_manager/core/browser/form_fetcher_impl.cc
diff --git a/components/password_manager/core/browser/form_fetcher_impl.cc b/components/password_manager/core/browser/form_fetcher_impl.cc
index 4ba32f4188e55bd60d72df202c34f02a5f35f903..a869f2bfcb4df3ac4ee16b6181171d7cad09b10c 100644
--- a/components/password_manager/core/browser/form_fetcher_impl.cc
+++ b/components/password_manager/core/browser/form_fetcher_impl.cc
@@ -91,10 +91,10 @@ const std::vector<const PasswordForm*>& FormFetcherImpl::GetFederatedMatches()
 void FormFetcherImpl::OnGetPasswordStoreResults(
     std::vector<std::unique_ptr<PasswordForm>> results) {
   DCHECK_EQ(State::WAITING, state_);
-  state_ = State::NOT_WAITING;
 
   if (need_to_refetch_) {
     // The received results are no longer up to date, need to re-request.
+    state_ = State::NOT_WAITING;
     Fetch();
     need_to_refetch_ = false;
     return;
@@ -167,6 +167,8 @@ void FormFetcherImpl::Fetch() {
 
 void FormFetcherImpl::ProcessPasswordStoreResults(
     std::vector<std::unique_ptr<autofill::PasswordForm>> results) {
+  DCHECK_EQ(State::WAITING, state_);
+  state_ = State::NOT_WAITING;
   federated_ = SplitFederatedMatches(&results);
   non_federated_ = std::move(results);