Remove relative includes.

core/src/fxcodec/codec/fx_codec_jpx_unittest.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdint.h>
 
 #include <limits>
 
 #include "codec_int.h"
+#include "testing/fx_string_testhelpers.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "../../../testing/fx_string_testhelpers.h"
 
 static const OPJ_OFF_T kSkipError = static_cast<OPJ_OFF_T>(-1);
 static const OPJ_SIZE_T kReadError = static_cast<OPJ_SIZE_T>(-1);
 static const OPJ_SIZE_T kWriteError = static_cast<OPJ_SIZE_T>(-1);
 
 static unsigned char stream_data[] = {
     0x00, 0x01, 0x02, 0x03,
     0x84, 0x85, 0x86, 0x87,  // Include some hi-bytes, too.
 };
 
@@ skipping 511 matching lines @@
       EXPECT_NE(img.comps[0].h, img.comps[1].h);
       EXPECT_NE(img.comps[0].w, img.comps[2].w);
       EXPECT_NE(img.comps[0].h, img.comps[2].h);
     }
     FX_Free(img.comps[0].data);
     FX_Free(img.comps[1].data);
     FX_Free(img.comps[2].data);
   }
   FX_Free(img.comps);
 }