[Autofill] Guard against the initialization failure of ICU Collator.

components/autofill/core/common/autofill_l10n_util_unittest.cc

+// Copyright 2015 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 "components/autofill/core/common/autofill_l10n_util.h"
+
+#include "base/test/histogram_tester.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/icu/source/common/unicode/locid.h"
+
+namespace autofill {
+namespace l10n {
+
+// Test the success in the creation of the ICU Collator.
+TEST(CaseInsensitiveCompareTest, IcuCollatorCreation_Success) {
+  base::HistogramTester histogram_tester;
+  CaseInsensitiveCompare compare;
+  histogram_tester.ExpectUniqueSample("Autofill.IcuCollatorCreationSuccess",
+                                      true, 1);
+}
+
+// Test the failure in creating the ICU Collator.
+TEST(CaseInsensitiveCompareTest, IcuCollatorCreation_FailureBadLocale) {
+  // Setting the locale to a bogus value.
+  icu::Locale bogusLocale = icu::Locale::createFromName("bogus");
+  bogusLocale.setToBogus();
+
+  base::HistogramTester histogram_tester;
+  CaseInsensitiveCompare compare(bogusLocale);
+  histogram_tester.ExpectUniqueSample("Autofill.IcuCollatorCreationSuccess",
+                                      false, 1);
+}
+
+}  // namespace l10n
+}  // namespace autofill