Refactor + enable GN check on video_coding_utility

webrtc/modules/video_coding/qp_parser.h

Index: webrtc/modules/video_coding/qp_parser.h
diff --git a/webrtc/modules/video_coding/utility/qp_parser.h b/webrtc/modules/video_coding/qp_parser.h
similarity index 80%
rename from webrtc/modules/video_coding/utility/qp_parser.h
rename to webrtc/modules/video_coding/qp_parser.h
index 0b644ef61ce155520751b80c568a8c8ed2d7f06b..c41bf57ed7f46cd8c5ba3577c0bfa5263bc79289 100644
--- a/webrtc/modules/video_coding/utility/qp_parser.h
+++ b/webrtc/modules/video_coding/qp_parser.h
@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef WEBRTC_MODULES_VIDEO_CODING_UTILITY_QP_PARSER_H_
-#define WEBRTC_MODULES_VIDEO_CODING_UTILITY_QP_PARSER_H_
+#ifndef WEBRTC_MODULES_VIDEO_CODING_QP_PARSER_H_
+#define WEBRTC_MODULES_VIDEO_CODING_QP_PARSER_H_
 
 #include "webrtc/modules/video_coding/encoded_frame.h"
 
@@ -27,4 +27,4 @@ class QpParser {
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_MODULES_VIDEO_CODING_UTILITY_QP_PARSER_H_
+#endif  // WEBRTC_MODULES_VIDEO_CODING_QP_PARSER_H_