Use relative filenames for internal includes.

include/libyuv/planar_functions.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_PLANAR_FUNCTIONS_H_  // NOLINT
 #define INCLUDE_LIBYUV_PLANAR_FUNCTIONS_H_
 
-#include "libyuv/basic_types.h"
+#include "basic_types.h"
 
 // TODO(fbarchard): Remove the following headers includes.
-#include "libyuv/convert.h"
-#include "libyuv/convert_argb.h"
+#include "convert.h"
+#include "convert_argb.h"
 
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
 #endif
 
 // Copy a plane of data.
 LIBYUV_API
 void CopyPlane(const uint8* src_y, int src_stride_y,
                uint8* dst_y, int dst_stride_y,
@@ skipping 463 matching lines @@
 int ARGBSobelXY(const uint8* src_argb, int src_stride_argb,
                 uint8* dst_argb, int dst_stride_argb,
                 int width, int height);
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
 #endif  // INCLUDE_LIBYUV_PLANAR_FUNCTIONS_H_  NOLINT