also add our AllowFontFamily method to TestFontSelector to avoid comp…

…ile errors

chromium_src/third_party/blink/renderer/platform/testing/font_test_helpers.cc

@@ -0,0 +1,15 @@
+/* Copyright (c) 2022 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// We must include these explicitly before redefining method names that they
+// also use.
+#include "third_party/blink/renderer/platform/fonts/font_fallback_list.h"
+#include "third_party/blink/renderer/platform/fonts/font_selector.h"
+
+#define IsPlatformFamilyMatchAvailable                                       \
+  AllowFontFamily(const AtomicString& family_name) override { return true; } \
+  bool IsPlatformFamilyMatchAvailable
+
+#include "src/third_party/blink/renderer/platform/testing/font_test_helpers.cc"