message: Set the lambda capture default arg in unbounded_work_queue_test.
  MSVC does not like our lambdas
diff: @@ -86,7 +86,7 @@ TEST_F(UnboundedWorkQueueTest, MultipleClosuresSleepingRandomly) {
  TEST_F(UnboundedWorkQueueTest, NestedClosures) {
  constexpr int num_closures = 10;
  // Run `num_closures` closures, each of which runs `num_closures` closures.
  - RunMultipleCopiesOfClosure(num_closures, [this]() {
  + RunMultipleCopiesOfClosure(num_closures, [=]() {
  RunMultipleCopiesOfClosure(num_closures, []() {});
  });
  BlockUntilClosuresDone(num_closures * num_closures + num_closures);
  