Replace Closure in TaskRunner::PostTask with OneShotCallback

components/user_manager/fake_user_manager.cc

Index: components/user_manager/fake_user_manager.cc
diff --git a/components/user_manager/fake_user_manager.cc b/components/user_manager/fake_user_manager.cc
index 52e54ae06cf2b890f5b1121ad9f2db9588d01e24..9fc82105aced4b124e4b45764b7248e4faf97272 100644
--- a/components/user_manager/fake_user_manager.cc
+++ b/components/user_manager/fake_user_manager.cc
@@ -17,9 +17,9 @@ namespace {
 class FakeTaskRunner : public base::TaskRunner {
  public:
   bool PostDelayedTask(const tracked_objects::Location& from_here,
-                       const base::Closure& task,
+                       base::OnceClosure task,
                        base::TimeDelta delay) override {
-    task.Run();
+    std::move(task).Run();
     return true;
   }
   bool RunsTasksOnCurrentThread() const override { return true; }