Clang-format aos

It has drifted...  Clean it up a bit.

Change-Id: I2fe31a2187b4f690634ae6942786575db20192af
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/aos/containers/priority_queue_test.cc b/aos/containers/priority_queue_test.cc
index c05d827..d26d7c9 100644
--- a/aos/containers/priority_queue_test.cc
+++ b/aos/containers/priority_queue_test.cc
@@ -17,6 +17,7 @@
 class PriorityQueueTest : public ::testing::Test {
  public:
   PriorityQueueTest() {}
+
  protected:
   PriorityQueue<int, 10, ExampleCompare> queue_;
 };