linux: Add some font-family-related FontRenderParams tests.

ui/gfx/test/fontconfig_util_linux.cc

 // Copyright 2014 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 "ui/gfx/test/fontconfig_util_linux.h"
 
 #include <fontconfig/fontconfig.h>
 
 #include "base/file_util.h"
 #include "base/logging.h"
@@ skipping 124 matching lines @@
                                        const std::string& op,
                                        const std::string& type,
                                        const std::string& value) {
   return base::StringPrintf(
       "    <test name=\"%s\" compare=\"%s\" qual=\"any\">\n"
       "      <%s>%s</%s>\n"
       "    </test>\n",
       name.c_str(), op.c_str(), type.c_str(), value.c_str(), type.c_str());
 }
 
+std::string CreateFontconfigAliasStanza(const std::string& original_family,
+                                        const std::string& preferred_family) {
+  return base::StringPrintf(
+      "  <alias>\n"
+      "    <family>%s</family>\n"
+      "    <prefer><family>%s</family></prefer>\n"
+      "  </alias>\n",
+      original_family.c_str(), preferred_family.c_str());
+}
+
 }  // namespace gfx