Use our own freetype2 (from //third_party) on Linux and FNL.

build/config/fnl/BUILD.gn

 # Copyright 2015 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("//build/config/features.gni")
 import("//build/config/sysroot.gni")
 import("//build/config/ui.gni")
 
 config("sdk") {
   if (sysroot != "") {
     cflags = [ "--sysroot=" + sysroot ]
     ldflags = [ "--sysroot=" + sysroot ]
 
     # Need to get some linker flags out of the sysroot.
     ldflags += [ exec_script("../linux/sysroot_ld_path.py",
                              [
                                rebase_path("//build/linux/sysroot_ld_path.sh",
                                            root_build_dir),
                                sysroot,
                              ],
                              "value") ]
   }
 
   defines = [ "FNL_MUSL" ]
 
   if (use_ozone) {
     defines += [ "MESA_EGL_NO_X11_HEADERS" ]
   }
 }
-
-config("freetype2") {
-  include_dirs = [ "$sysroot/usr/include/freetype2" ]
-  libs = [ "freetype" ]
-}