Replace TestSimpleTaskRunner::GetPendingTasks with TakePendingTasks

cc/base/delayed_unique_notifier_unittest.cc

Index: cc/base/delayed_unique_notifier_unittest.cc
diff --git a/cc/base/delayed_unique_notifier_unittest.cc b/cc/base/delayed_unique_notifier_unittest.cc
index f30834e460f4ad98b1fa618bd9490d9c44403f32..ae9ad17e9972d9c2dc4d314c86edc62ba2627891 100644
--- a/cc/base/delayed_unique_notifier_unittest.cc
+++ b/cc/base/delayed_unique_notifier_unittest.cc
@@ -45,9 +45,7 @@ class DelayedUniqueNotifierTest : public testing::Test {
   int NotificationCount() const { return notification_count_; }
 
   std::deque<base::TestPendingTask> TakePendingTasks() {
-    std::deque<base::TestPendingTask> tasks = task_runner_->GetPendingTasks();
-    task_runner_->ClearPendingTasks();
-    return tasks;
+    return task_runner_->TakePendingTasks();
   }
 
  protected: