Move LanguageUsageMetrics and TranslateBrowserMetrics to components

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/sparse_histogram.h"
-#include "base/strings/string_tokenizer.h"
-#include "base/strings/string_util.h"
-
-namespace {
-void RecordAcceptLanguage(int language_code) {
-  UMA_HISTOGRAM_SPARSE_SLOWLY("LanguageUsage.AcceptLanguage",
-                              language_code);
-}
-}  // namespace
-
-// static
-void LanguageUsageMetrics::RecordAcceptLanguages(
-    const std::string& accept_languages) {
-  std::set<int> languages;
-  ParseAcceptLanguages(accept_languages, &languages);
-  std::for_each(languages.begin(), languages.end(), RecordAcceptLanguage);
-}
-
-// static
-void LanguageUsageMetrics::RecordApplicationLanguage(
-    const std::string& application_locale) {
-  const int language_code = ToLanguageCode(application_locale);
-  if (language_code != 0)
-    UMA_HISTOGRAM_SPARSE_SLOWLY("LanguageUsage.ApplicationLanguage",
-                                language_code);
-}
-
-// static
-int LanguageUsageMetrics::ToLanguageCode(const std::string& locale) {
-  base::StringTokenizer parts(locale, "-_");
-  if (!parts.GetNext())
-    return 0;
-
-  std::string language_part = parts.token();
-  StringToLowerASCII(&language_part);
-
-  int language_code = 0;
-  for (std::string::iterator it = language_part.begin();
-       it != language_part.end(); ++it) {
-    char ch = *it;
-    if (ch < 'a' || 'z' < ch)
-      return 0;
-
-    language_code <<= 8;
-    language_code += ch;
-  }
-
-  return language_code;
-}
-
-// static
-void LanguageUsageMetrics::ParseAcceptLanguages(
-    const std::string& accept_languages,
-    std::set<int>* languages) {
-  languages->clear();
-  base::StringTokenizer locales(accept_languages, ",");
-  while (locales.GetNext()) {
-    const int language_code = ToLanguageCode(locales.token());
-    if (language_code != 0)
-      languages->insert(language_code);
-  }
-}