update_engine: Run clang-format on ./ (root directory)

BUG=none
TEST=unittest

Change-Id: Ibd075dc7ea9a18e798f612e35725f1c83c112809
Reviewed-on: https://chromium-review.googlesource.com/1409708
Commit-Ready: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Sen Jiang <senj@chromium.org>
diff --git a/power_manager_chromeos.cc b/power_manager_chromeos.cc
index 23fb032..531d367 100644
--- a/power_manager_chromeos.cc
+++ b/power_manager_chromeos.cc
@@ -29,7 +29,7 @@
 std::unique_ptr<PowerManagerInterface> CreatePowerManager() {
   return std::unique_ptr<PowerManagerInterface>(new PowerManagerChromeOS());
 }
-}
+}  // namespace power_manager
 
 PowerManagerChromeOS::PowerManagerChromeOS()
     : power_manager_proxy_(DBusConnection::Get()->GetDBus()) {}