Do not use \u unicode characters directly in libaddressinput unit tests.

third_party/libaddressinput/chromium/string_compare_unittest.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 "third_party/libaddressinput/src/cpp/src/util/string_compare.h"
 
+#include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 TEST(ChromeStringCompareTest, IgnoreDiacritics) {
   i18n::addressinput::StringCompare sc;
-  EXPECT_TRUE(sc.NaturalEquals("Texas", "T\u00E9xas"));
+  EXPECT_TRUE(sc.NaturalEquals("Texas", base::WideToUTF8(L"T\u00E9xas")));
 }
 
 TEST(ChromeStringCompareTest, IgnoreCapitalization) {
   i18n::addressinput::StringCompare sc;
   EXPECT_TRUE(sc.NaturalEquals("Texas", "teXas"));
 }
 
 TEST(ChromeStringCompareTest, DifferentStringAreDifferent) {
   i18n::addressinput::StringCompare sc;
   EXPECT_FALSE(sc.NaturalEquals("Texas", "California"));
 }
 
 }  // namespace