Since we're only using it on Linux now, just require poppler as a system dependency.

third_party/fontconfig/README.chromium

Index: third_party/fontconfig/README.chromium
diff --git a/third_party/fontconfig/README.chromium b/third_party/fontconfig/README.chromium
deleted file mode 100644
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-Name: fontconfig
-Short Name: fontconfig
-URL: git://anongit.freedesktop.org/fontconfig
-Version: 2.10.93
-License: MIT, except for Windows-specific files, which are LGPL
-License File: LICENSE
-Security Critical: No
-
-Description:
-A library for configuring and customizing font access.
-Used in Skia as a dependency of libpoppler, for PDF rasterization during
-testing.
-
-Local Modifications:
-No changes to files from the upstream repository.
-Platform-specific configuration files added to
-third_party/fontconfig/config/(platform):
-  config.h
-  fcstdint.h
-  src/fcalias.h
-  src/fcaliastail.h
-  src/fcftalias.h
-  src/fcftaliastail.h
-  These are Windows replacements for POSIX headers:
-    dirent.c
-    dirent.h
-    unistd.h
-
-Autogenerated files (consistent across platforms) added to
-third_party/fontconfig/config:
-  fc-case/fccase.h
-  fc-glyphname/fcglyphname.h
-  fc-lang/fclang.h
-  src/fcobjshash.h
-
-On Mac, these are the files generated by
-  ./configure --with-add-fonts=/System/Library/Fonts,/Library/Fonts
-config/mac/config.h.template then has a section added to the top:
-
-+/* Manually added template defines */
-+#define FC_CACHEDIR "@FC_CACHEDIR@"
-+#define FONTCONFIG_PATH "@FONTCONFIG_PATH@"
-
-On Windows, the configuration files were from
-http://comments.gmane.org/gmane.comp.fonts.fontconfig/4438
-(fontconfig development list).