Update SplitString calls in chrome.

chrome/browser/metrics/variations/variations_service_unittest.cc

 // Copyright (c) 2012 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/metrics/variations/variations_service.h"
 
 #include <vector>
 
 #include "base/base64.h"
 #include "base/prefs/testing_pref_service.h"
@@ skipping 466 matching lines @@
   };
 
   for (const auto& test : test_cases) {
     TestingPrefServiceSimple prefs;
     VariationsService::RegisterPrefs(prefs.registry());
     VariationsService service(
         new web_resource::TestRequestAllowedNotifier(&prefs), &prefs, NULL);
 
     if (test.pref_value_before) {
       base::ListValue list_value;
-      std::vector<std::string> list_components;
-      base::SplitString(test.pref_value_before, ',', &list_components);
-      for (const std::string& component : list_components)
+      for (const std::string& component : base::SplitString(
+               test.pref_value_before, ",",
+               base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL))
         list_value.AppendString(component);
       prefs.Set(prefs::kVariationsPermanentConsistencyCountry, list_value);
     }
 
     variations::VariationsSeed seed(CreateTestSeed());
     if (test.seed_country_code)
       seed.set_country_code(test.seed_country_code);
 
     base::HistogramTester histogram_tester;
     EXPECT_EQ(test.expected_country, service.LoadPermanentConsistencyCountry(
                                          base::Version(test.version), seed));
 
     base::ListValue expected_list_value;
-    std::vector<std::string> list_components;
-    base::SplitString(test.expected_pref_value_after, ',', &list_components);
-    for (const std::string& component : list_components)
+    for (const std::string& component : base::SplitString(
+             test.expected_pref_value_after, ",",
+             base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL))
       expected_list_value.AppendString(component);
     EXPECT_TRUE(expected_list_value.Equals(
         prefs.GetList(prefs::kVariationsPermanentConsistencyCountry)));
 
     histogram_tester.ExpectUniqueSample(
         "Variations.LoadPermanentConsistencyCountryResult",
         test.expected_result, 1);
   }
 }
 
 }  // namespace chrome_variations