Add material-foundation dependencies.

ios/third_party/material_font_disk_loader_ios/BUILD.gn

+# Copyright 2016 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.
+
+config("material_font_disk_loader_ios_config") {
+  include_dirs = [ "src/src" ]
+  visibility = [ ":material_font_disk_loader_ios" ]
+}
+
+source_set("material_font_disk_loader_ios") {
+  sources = [
+    "src/src/MDFFontDiskLoader.h",
+    "src/src/MDFFontDiskLoader.m",
+    "src/src/MaterialFontDiskLoader.h",
+  ]
+  public_configs = [ ":material_font_disk_loader_ios_config" ]
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [
+    ":material_font_disk_loader_ios_config",
+    "//build/config/compiler:enable_arc",
+    "//build/config/compiler:no_chromium_code",
+  ]
+}