remove guard nolints from all headers

include/libyuv/convert.h

 /*
  *  Copyright 2011 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef INCLUDE_LIBYUV_CONVERT_H_  // NOLINT
+#ifndef INCLUDE_LIBYUV_CONVERT_H_
 #define INCLUDE_LIBYUV_CONVERT_H_
 
 #include "libyuv/basic_types.h"
 
 #include "libyuv/rotate.h"  // For enum RotationMode.
 
 // TODO(fbarchard): fix WebRTC source to include following libyuv headers:
 #include "libyuv/convert_argb.h"  // For WebRTC I420ToARGB. b/620
 #include "libyuv/convert_from.h"  // For WebRTC ConvertFromI420. b/620
 #include "libyuv/planar_functions.h"  // For WebRTC I420Rect, CopyPlane. b/618
@@ skipping 227 matching lines @@
                   int src_width, int src_height,
                   int crop_width, int crop_height,
                   enum RotationMode rotation,
                   uint32 format);
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
-#endif  // INCLUDE_LIBYUV_CONVERT_H_  NOLINT
+#endif  // INCLUDE_LIBYUV_CONVERT_H_