Move LanguageUsageMetrics and TranslateBrowserMetrics to components

chrome/browser/language_usage_metrics.h

-// 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.
-
-#ifndef CHROME_BROWSER_LANGUAGE_USAGE_METRICS_H_
-#define CHROME_BROWSER_LANGUAGE_USAGE_METRICS_H_
-
-#include <set>
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/gtest_prod_util.h"
-
-// Methods to record language usage as UMA histograms.
-class LanguageUsageMetrics {
- public:
-  // Records accept languages as a UMA histogram. |accept_languages| is a
-  // case-insensitive comma-separated list of languages/locales of either xx,
-  // xx-YY, or xx_YY format where xx is iso-639 language code and YY is iso-3166
-  // country code. Country code is ignored. That is, xx and XX-YY are considered
-  // identical and recorded once.
-  static void RecordAcceptLanguages(const std::string& accept_languages);
-
-  // Records the application language as a UMA histogram. |application_locale|
-  // is a case-insensitive locale string of either xx, xx-YY, or xx_YY format.
-  // Only the language part (xx in the example) is considered.
-  static void RecordApplicationLanguage(const std::string& application_locale);
-
-  // Parses |locale| and returns the language code. Returns 0 in case of errors.
-  // The language code is calculated from two alphabets. For example, if
-  // |locale| is 'en' which represents 'English', the codes of 'e' and 'n' are
-  // 101 and 110 respectively, and the language code will be 101 * 256 + 100 =
-  // 25966.
-  // |locale| should consist of only lower-case letters. This function doesn't
-  // check whether |locale| is valid locale or not strictly.
-  static int ToLanguageCode(const std::string &locale);
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(LanguageUsageMetrics);
-
-  // Parses |accept_languages| and returns a set of language codes in
-  // |languages|.
-  static void ParseAcceptLanguages(const std::string& accept_languages,
-                                   std::set<int>* languages);
-
-  FRIEND_TEST_ALL_PREFIXES(LanguageUsageMetricsTest, ParseAcceptLanguages);
-};
-
-#endif  // CHROME_BROWSER_LANGUAGE_USAGE_METRICS_H_