Sort #includes that got unsorted when gmock.h and gtest.h moved to webrtc/test/

webrtc/modules/video_coding/protection_bitrate_calculator_unittest.cc

Index: webrtc/modules/video_coding/protection_bitrate_calculator_unittest.cc
diff --git a/webrtc/modules/video_coding/protection_bitrate_calculator_unittest.cc b/webrtc/modules/video_coding/protection_bitrate_calculator_unittest.cc
index b442bba6b29dbb568b1c679d811e337ecd167ac4..718929cafd794c7b336a559857a3858620c34be3 100644
--- a/webrtc/modules/video_coding/protection_bitrate_calculator_unittest.cc
+++ b/webrtc/modules/video_coding/protection_bitrate_calculator_unittest.cc
@@ -8,9 +8,9 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/test/gtest.h"
 #include "webrtc/modules/video_coding/protection_bitrate_calculator.h"
 #include "webrtc/system_wrappers/include/clock.h"
+#include "webrtc/test/gtest.h"
 
 namespace webrtc {