Resume encryption migration immediately if the previous migration is incomplete.

chromeos/login/auth/login_performer.cc

Index: chromeos/login/auth/login_performer.cc
diff --git a/chromeos/login/auth/login_performer.cc b/chromeos/login/auth/login_performer.cc
index c4376c2979619846784963b3d593e88a3f8ecf18..e35c436de7ba4874520cda25114f670853e48c7b 100644
--- a/chromeos/login/auth/login_performer.cc
+++ b/chromeos/login/auth/login_performer.cc
@@ -107,11 +107,12 @@ void LoginPerformer::OnPasswordChangeDetected() {
   }
 }
 
-void LoginPerformer::OnOldEncryptionDetected(const UserContext& user_context) {
+void LoginPerformer::OnOldEncryptionDetected(const UserContext& user_context,
+                                             bool has_incomplete_migration) {
   DCHECK(task_runner_->RunsTasksOnCurrentThread());
 
   if (delegate_)
-    delegate_->OnOldEncryptionDetected(user_context);
+    delegate_->OnOldEncryptionDetected(user_context, has_incomplete_migration);
   else
     NOTREACHED();
 }