Update freetype to 2.5.4.

third_party/BUILD.gn

Index: third_party/BUILD.gn
diff --git a/third_party/BUILD.gn b/third_party/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..2c889afb0e90a0f387186f5165529b68dcff9277
--- /dev/null
+++ b/third_party/BUILD.gn
@@ -0,0 +1,78 @@
+# 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.
+
+group("third_party") {
+  deps = [
+    ":bigint",
+    ":freetype",
+    ":safemath",
+  ]
+}
+
+static_library("bigint") {
+  sources = [
+    "bigint/BigInteger.hh",
+    "bigint/BigIntegerLibrary.hh",
+    "bigint/BigIntegerUtils.hh",
+    "bigint/BigUnsigned.hh",
+    "bigint/NumberlikeArray.hh",
+    "bigint/BigUnsignedInABase.hh",
+    "bigint/BigInteger.cc",
+    "bigint/BigIntegerUtils.cc",
+    "bigint/BigUnsigned.cc",
+    "bigint/BigUnsignedInABase.cc",
+  ]
+}
+
+static_library("freetype") {
+  defines = [
+    "FT2_BUILD_LIBRARY",
+  ]
+  include_dirs = [
+    "freetype/include",
+  ]
+  sources = [
+    "freetype/include/freetype.h",
+    "freetype/include/ft2build.h",
+    "freetype/include/ftmm.h",
+    "freetype/include/ftotval.h",
+    "freetype/include/ftoutln.h",
+    "freetype/include/tttables.h",
+    "freetype/include/internal/ftobjs.h",
+    "freetype/include/internal/ftstream.h",
+    "freetype/include/internal/tttypes.h",
+    "freetype/src/cff/cffobjs.h",
+    "freetype/src/cff/cfftypes.h",
+    "freetype/src/cff/cff.c",
+    "freetype/src/base/ftbase.c",
+    "freetype/src/base/ftbitmap.c",
+    "freetype/src/base/ftglyph.c",
+    "freetype/src/base/ftinit.c",
+    "freetype/src/base/ftlcdfil.c",
+    "freetype/src/base/ftmm.c",
+    "freetype/src/base/ftsystem.c",
+    "freetype/src/psaux/psaux.c",
+    "freetype/src/pshinter/pshinter.c",
+    "freetype/src/psnames/psmodule.c",
+    "freetype/src/raster/raster.c",
+    "freetype/src/sfnt/sfnt.c",
+    "freetype/src/smooth/smooth.c",
+    "freetype/src/truetype/truetype.c",
+    "freetype/src/type1/type1.c",
+    "freetype/src/cid/type1cid.c",
+  ]
+}
+
+component("safemath") {
+  sources = [
+    "logging.h",
+    "macros.h",
+    "template_util.h",
+    "numerics/safe_conversions.h",
+    "numerics/safe_conversions_impl.h",
+    "numerics/safe_math.h",
+    "numerics/safe_math_impl.h",
+  ]
+}
+