Unify freetype-android and freetype2 into one checkout

third_party/freetype-android/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("//build/config/chromecast_build.gni")
 
-assert(is_android || is_chromecast,
-       "This library is only used on Android or Chromecast")
-
 config("freetype_config") {
   include_dirs = [
     "include",
     "src/include",
   ]
 }
 
-source_set("freetype") {
+config("freetype-warnings") {
+  cflags = []
+
+  # The reduction of FreeType files to a minimum triggers -Wunused-function
+  # warnings in ftbase.c
+  cflags += [ "-Wno-unused-function" ]
+}
+
+config("freetype-visibility") {
+  cflags = []
+  cflags += [ "-fvisibility=default" ]
+}
+
+component("freetype") {
+  output_name = "freetype"
+  output_extension = "so.6"
   sources = [
-    # The following files are not sorted alphabetically, but in the
-    # same order as in Android.mk to ease maintenance.
     "src/src/autofit/autofit.c",
     "src/src/base/ftbase.c",
     "src/src/base/ftbbox.c",
     "src/src/base/ftbitmap.c",
     "src/src/base/ftfntfmt.c",
     "src/src/base/ftfstype.c",
     "src/src/base/ftgasp.c",
     "src/src/base/ftglyph.c",
     "src/src/base/ftinit.c",
     "src/src/base/ftlcdfil.c",
     "src/src/base/ftmm.c",
     "src/src/base/ftstroke.c",
     "src/src/base/ftsystem.c",
     "src/src/base/fttype1.c",
     "src/src/cff/cff.c",
     "src/src/gzip/ftgzip.c",
     "src/src/pshinter/pshinter.c",
     "src/src/psnames/psnames.c",
     "src/src/raster/raster.c",
     "src/src/sfnt/sfnt.c",
     "src/src/smooth/smooth.c",
     "src/src/truetype/truetype.c",
   ]
 
-  if (is_chromecast) {
+  if (is_linux || is_chromecast) {
+    # Needed for content_shell on Linux and Chromecast, since fontconfig requires FT_Get_BDF_Property.
     sources += [ "src/src/base/ftbdf.c" ]
   }
 
   defines = [
     "FT2_BUILD_LIBRARY",
     "DARWIN_NO_CARBON",
 
     # Long directory name to avoid accidentally using wrong headers.
     "FT_CONFIG_MODULES_H=<freetype-android-config/ftmodule.h>",
     "FT_CONFIG_OPTIONS_H=<freetype-android-config/ftoption.h>",
   ]
 
   public_configs = [ ":freetype_config" ]
   configs -= [ "//build/config/compiler:chromium_code" ]
-  configs += [ "//build/config/compiler:no_chromium_code" ]
+  configs += [
+    "//build/config/compiler:no_chromium_code",
+    ":freetype-warnings",
+    ":freetype-visibility"
+  ]
 
   deps = [
     "//third_party/libpng",
     "//third_party/zlib",
   ]
 }