Move string tokenizer to base/strings.

chrome/browser/language_usage_metrics.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 "chrome/browser/language_usage_metrics.h"
 
 #include <algorithm>
 
 #include "base/metrics/histogram.h"
-#include "base/string_tokenizer.h"
 #include "base/string_util.h"
+#include "base/strings/string_tokenizer.h"
 
 namespace {
 void RecordAcceptLanguage(Language language) {
   UMA_HISTOGRAM_ENUMERATION("LanguageUsageMetrics.AcceptLanguage",
                             language, NUM_LANGUAGES);
 }
 }  // namespace
 
 // static
 void LanguageUsageMetrics::RecordAcceptLanguages(
@@ skipping 14 matching lines @@
   if (language != UNKNOWN_LANGUAGE) {
     UMA_HISTOGRAM_ENUMERATION("LanguageUsageMetrics.ApplicationLanguage",
                               language, NUM_LANGUAGES);
   }
 }
 
 // static
 void LanguageUsageMetrics::ParseAcceptLanguages(
     const std::string& accept_languages, std::set<Language>* languages) {
   languages->clear();
-  StringTokenizer locales(accept_languages, ",");
+  base::StringTokenizer locales(accept_languages, ",");
   while (locales.GetNext()) {
     const Language language = ToLanguage(locales.token());
     if (language != UNKNOWN_LANGUAGE) {
       languages->insert(language);
     }
   }
 }
 
 // static
 Language LanguageUsageMetrics::ToLanguage(const std::string& locale) {
-  StringTokenizer parts(locale, "-_");
+  base::StringTokenizer parts(locale, "-_");
   if (!parts.GetNext()) {
     return UNKNOWN_LANGUAGE;
   }
   const std::string language_part = parts.token();
   Language language;
   if (!LanguageFromCode(language_part.c_str(), &language)) {
     return UNKNOWN_LANGUAGE;
   }
   return language;
 }