Cleanup: Convert ASCIIToUTF16("") to string16().

base/i18n/string_search_unittest.cc

 // Copyright (c) 2011 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 <string>
 
 #include "base/i18n/rtl.h"
 #include "base/i18n/string_search.h"
+#include "base/string16.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "unicode/usearch.h"
 
 namespace base {
 namespace i18n {
 
 // Note on setting default locale for testing: The current default locale on
 // the Mac trybot is en_US_POSIX, with which primary-level collation strength
 // string search is case-sensitive, when normally it should be
 // case-insensitive. In other locales (including en_US which English speakers
 // in the U.S. use), this search would be case-insensitive as expected.
 
 TEST(StringSearchTest, ASCII) {
   std::string default_locale(uloc_getDefault());
   bool locale_is_posix = (default_locale == "en_US_POSIX");
   if (locale_is_posix)
     SetICUDefaultLocale("en_US");
 
   EXPECT_TRUE(StringSearchIgnoringCaseAndAccents(
       ASCIIToUTF16("hello"), ASCIIToUTF16("hello world")));
 
   EXPECT_FALSE(StringSearchIgnoringCaseAndAccents(
       ASCIIToUTF16("h    e l l o"), ASCIIToUTF16("h   e l l o")));
 
   EXPECT_TRUE(StringSearchIgnoringCaseAndAccents(
       ASCIIToUTF16("aabaaa"), ASCIIToUTF16("aaabaabaaa")));
 
   EXPECT_FALSE(StringSearchIgnoringCaseAndAccents(
-      ASCIIToUTF16("searching within empty string"), ASCIIToUTF16("")));
+      ASCIIToUTF16("searching within empty string"), string16()));
 
   EXPECT_TRUE(StringSearchIgnoringCaseAndAccents(
-      ASCIIToUTF16(""), ASCIIToUTF16("searching for empty string")));
+      string16(), ASCIIToUTF16("searching for empty string")));
 
   EXPECT_TRUE(StringSearchIgnoringCaseAndAccents(
       ASCIIToUTF16("case insensitivity"), ASCIIToUTF16("CaSe InSeNsItIvItY")));
 
   if (locale_is_posix)
     SetICUDefaultLocale(default_locale.data());
 }
 
 TEST(StringSearchTest, UnicodeLocaleIndependent) {
   // Base characters
@@ skipping 90 matching lines @@
 
   EXPECT_FALSE(StringSearchIgnoringCaseAndAccents(
       a_base, a_with_ring));
 
   SetICUDefaultLocale(default_locale);
 }
 
 }  // namespace i18n
 }  // namespace base