Migrate base::TaskRunner from Closure to OnceClosure

base/threading/post_task_and_reply_impl_unittest.cc

Index: base/threading/post_task_and_reply_impl_unittest.cc
diff --git a/base/threading/post_task_and_reply_impl_unittest.cc b/base/threading/post_task_and_reply_impl_unittest.cc
index 5385739599f18daa5095e277d6e88fd06ba7da54..f1b1d7afa2e3a706c3b3ff94e17682dbebe30837 100644
--- a/base/threading/post_task_and_reply_impl_unittest.cc
+++ b/base/threading/post_task_and_reply_impl_unittest.cc
@@ -29,7 +29,7 @@ class PostTaskAndReplyTaskRunner : public internal::PostTaskAndReplyImpl {
 
  private:
   bool PostTask(const tracked_objects::Location& from_here,
-                Closure task) override {
+                OnceClosure task) override {
     return destination_->PostTask(from_here, std::move(task));
   }