Allow the default generic font family settings to find the first available font

chrome/browser/ui/webui/options/font_settings_utils.cc

Index: chrome/browser/ui/webui/options/font_settings_utils.cc
diff --git a/chrome/browser/ui/webui/options/font_settings_utils.cc b/chrome/browser/ui/webui/options/font_settings_utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..516b138c93e4daf644f4cdf5057588b792363a3f
--- /dev/null
+++ b/chrome/browser/ui/webui/options/font_settings_utils.cc
@@ -0,0 +1,25 @@
+// Copyright (c) 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.
+
+#include "chrome/browser/ui/webui/options/font_settings_utils.h"
+
+#include "ui/gfx/font_list.h"
+
+namespace options {
+
+std::string FontSettingsUtilities::ResolveFontList(
+    const std::string& font_name_or_list) {
+  if (!font_name_or_list.empty() && font_name_or_list[0] == ',')
+    return gfx::FontList::FirstAvailableOrFirst(font_name_or_list);
+  return font_name_or_list;
+}
+
+#if !defined(OS_WIN)
+std::string FontSettingsUtilities::MaybeGetLocalizedFontName(
+    const std::string& font_name_or_list) {
+  return ResolveFontList(font_name_or_list);
+}
+#endif
+
+}  // namespace options