Merge the following commit to XFA:

BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//testing/test.gni")
 
 pdf_use_skia = false
 
 declare_args() {
   # On Android there's no system FreeType. On Windows and Mac, only a few
@@ skipping 329 matching lines @@
     "core/src/fxcodec/fx_libopenjpeg/src/fx_j2k_lib.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_jpt.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_mct.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_mqc.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_openjpeg.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_openjpeg_jp2.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_opj_clock.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_pi.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_raw.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_t1.c",
-    "core/src/fxcodec/fx_libopenjpeg/src/fx_t1_generate_luts.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_t2.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_tcd.c",
     "core/src/fxcodec/fx_libopenjpeg/src/fx_tgt.c",
     "core/src/fxcodec/fx_lpng/src/fx_png.c",
     "core/src/fxcodec/fx_lpng/src/fx_pngerror.c",
     "core/src/fxcodec/fx_lpng/src/fx_pngget.c",
     "core/src/fxcodec/fx_lpng/src/fx_pngmem.c",
     "core/src/fxcodec/fx_lpng/src/fx_pngpread.c",
     "core/src/fxcodec/fx_lpng/src/fx_pngread.c",
     "core/src/fxcodec/fx_lpng/src/fx_pngrio.c",
@@ skipping 1221 matching lines @@
     "testing/fx_string_testhelpers.h",
   ]
   deps = [
     "//testing/gtest",
     ":pdfium"
   ]
   include_dirs = [ "." ]
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ ":pdfium_config", "//build/config/compiler:no_chromium_code" ]
 }