Control FreeType linkage globally in //build/config/freetype

build/config/freetype/BUILD.gn

+# Copyright 2017 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")
+
+group("freetype") {
+  if (is_chromecast || is_android) {
+    public_deps = [
+      "//third_party/freetype",
+    ]
+  } else {
+    public_configs = [ "//build/linux:freetype_from_pkgconfig" ]
+  }
+}