[headless] Enable headless embedders to specify fonts.

headless/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/chrome_build.gni")
 import("//build/util/process_version.gni")
 import("//headless/headless.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//printing/features/features.gni")
 import("//testing/test.gni")
@@ skipping 182 matching lines @@
   ]
 
   args = [
     "--protocol",
     rebase_path(inputs[0], root_build_dir),
     "--output_dir",
     rebase_path(target_gen_dir) + "/public",
   ]
 }
 
+if (headless_fontconfig_utils) {
+  static_library("headless_fontconfig_utils") {
+    sources = [
+      "public/util/fontconfig.cc",
+      "public/util/fontconfig.h",
+    ]
+
+    deps = [
+      "//third_party/fontconfig",
+      "//third_party/freetype",
+    ]
+  }
+}
+
 component("headless") {
   sources = [
     "app/headless_shell_switches.cc",
     "app/headless_shell_switches.h",
     "lib/browser/headless_browser_context_impl.cc",
     "lib/browser/headless_browser_context_impl.h",
     "lib/browser/headless_browser_context_options.cc",
     "lib/browser/headless_browser_context_options.h",
     "lib/browser/headless_browser_impl.cc",
     "lib/browser/headless_browser_impl.h",
@@ skipping 160 matching lines @@
       "$root_gen_dir/headless/embedded_resource_pak.h",
     ]
   } else {
     deps += [ ":pak" ]
   }
 
   if (use_ozone) {
     deps += [ "//ui/ozone" ]
   }
 
+  if (headless_fontconfig_utils) {
+    deps += [ ":headless_fontconfig_utils" ]
+  }
+
   configs += [ ":headless_implementation" ]
 }
 
 # Headless renderer is a convenience library that includes headless classes
 # that depend on the renderer. These are not added in case of a component build
 # since in that case they are already included in the headless component.
 static_library("headless_renderer") {
   deps = [
     ":headless",
   ]
@@ skipping 301 matching lines @@
 
 executable("headless_example") {
   sources = [
     "app/headless_example.cc",
   ]
 
   deps = [
     ":headless_shell_lib",
   ]
 }