Fix all relative includes to third_party.

core/src/fxcodec/codec/fx_codec_icc.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.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include "../../../../third_party/lcms2-2.6/include/lcms2.h"
 #include "../../../include/fxcodec/fx_codec.h"
 #include "codec_int.h"
+#include "third_party/lcms2-2.6/include/lcms2.h"
 
 const FX_DWORD N_COMPONENT_LAB = 3;
 const FX_DWORD N_COMPONENT_GRAY = 1;
 const FX_DWORD N_COMPONENT_RGB = 3;
 const FX_DWORD N_COMPONENT_CMYK = 4;
 const FX_DWORD N_COMPONENT_DEFAULT = 3;
 
 FX_BOOL MD5ComputeID(const void* buf, FX_DWORD dwSize, uint8_t ID[16]) {
   return cmsMD5computeIDExt(buf, dwSize, ID);
 }
@@ skipping 1951 matching lines @@
   uint8_t c1 = FXSYS_round(c * 255);
   uint8_t m1 = FXSYS_round(m * 255);
   uint8_t y1 = FXSYS_round(y * 255);
   uint8_t k1 = FXSYS_round(k * 255);
   uint8_t r, g, b;
   AdobeCMYK_to_sRGB1(c1, m1, y1, k1, r, g, b);
   R = 1.0f * r / 255;
   G = 1.0f * g / 255;
   B = 1.0f * b / 255;
 }