[ash-md] Added a delay between system menu default/detailed view transitions.

base/test/test_mock_time_task_runner.cc

Index: base/test/test_mock_time_task_runner.cc
diff --git a/base/test/test_mock_time_task_runner.cc b/base/test/test_mock_time_task_runner.cc
index 6dfecaf838ba8ee5e5b36f8d067e021e4d51f4c5..f0ba9aa102c4f38d1a273762dad9b60e7b4a28fe 100644
--- a/base/test/test_mock_time_task_runner.cc
+++ b/base/test/test_mock_time_task_runner.cc
@@ -173,6 +173,15 @@ std::unique_ptr<TickClock> TestMockTimeTaskRunner::GetMockTickClock() const {
   return MakeUnique<MockTickClock>(this);
 }
 
+std::deque<TestPendingTask> TestMockTimeTaskRunner::TakePendingTasks() {
+  std::deque<TestPendingTask> tasks;
+  while (!tasks_.empty()) {
+    tasks.push_back(tasks_.top());
+    tasks_.pop();
+  }
+  return tasks;
+}
+
 bool TestMockTimeTaskRunner::HasPendingTask() const {
   DCHECK(thread_checker_.CalledOnValidThread());
   return !tasks_.empty();