[Translate] Factor out access to Accept-Languages

components/translate/core/browser/translate_manager_unittest.cc

 // Copyright 2015 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 "components/translate/core/browser/translate_manager.h"
 
+#include "base/prefs/testing_pref_service.h"
 #include "components/translate/core/browser/translate_download_manager.h"
+#include "components/translate/core/browser/translate_prefs.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace translate {
 
 // Target language comes from application locale if the locale's language
 // is supported.
 TEST(TranslateManagerTest, GetTargetLanguageDefaultsToAppLocale) {
   std::vector<std::string> accept_language_list;
 
   // Ensure we're not requesting a server-side translate language list.
   TranslateLanguageList::DisableUpdate();
 
   // Ensure the locale is set to a supported language.
   ASSERT_TRUE(TranslateDownloadManager::IsSupportedLanguage("en"));
   TranslateDownloadManager* manager = TranslateDownloadManager::GetInstance();
   manager->ResetForTesting();
   manager->set_application_locale("en");
-  EXPECT_EQ("en", TranslateManager::GetTargetLanguage(accept_language_list));
+  TestingPrefServiceSimple prefs;
+  TranslatePrefs translate_prefs(&prefs, "intl.accept_languages", NULL);
+  EXPECT_EQ("en", TranslateManager::GetTargetLanguage(&translate_prefs));
 
   // Try a second supported language.
   ASSERT_TRUE(TranslateDownloadManager::IsSupportedLanguage("de"));
   manager->set_application_locale("de");
-  EXPECT_EQ("de", TranslateManager::GetTargetLanguage(accept_language_list));
+  EXPECT_EQ("de", TranslateManager::GetTargetLanguage(&translate_prefs));
 }
 
 // If the application locale's language is not supported, the target language
 // falls back to the first supported language in |accept_languages_list|. If
 // none of the languages in |accept_language_list| is supported, the target
 // language is empty.
 TEST(TranslateManagerTest, GetTargetLanguageAcceptLangFallback) {
   std::vector<std::string> accept_language_list;
 
   // Ensure we're not requesting a server-side translate language list.
   TranslateLanguageList::DisableUpdate();
 
   // Ensure locale is set to a not-supported language.
   ASSERT_FALSE(TranslateDownloadManager::IsSupportedLanguage("xy"));
   TranslateDownloadManager* manager = TranslateDownloadManager::GetInstance();
   manager->ResetForTesting();
   manager->set_application_locale("xy");
+  TestingPrefServiceSimple prefs;
+  TranslatePrefs translate_prefs(&prefs, "intl.accept_languages", NULL);
 
   // Default return is empty string.
-  EXPECT_EQ("", TranslateManager::GetTargetLanguage(accept_language_list));
+  EXPECT_EQ("", TranslateManager::GetTargetLanguage(&translate_prefs));
 
   // Unsupported languages still result in the empty string.
   ASSERT_FALSE(TranslateDownloadManager::IsSupportedLanguage("xy"));
   accept_language_list.push_back("xy");
-  EXPECT_EQ("", TranslateManager::GetTargetLanguage(accept_language_list));
+  translate_prefs.UpdateLanguageList(accept_language_list);
+  EXPECT_EQ("", TranslateManager::GetTargetLanguage(&translate_prefs));
 
   // First supported language is the fallback language.
   ASSERT_TRUE(TranslateDownloadManager::IsSupportedLanguage("en"));
   accept_language_list.push_back("en");
-  EXPECT_EQ("en", TranslateManager::GetTargetLanguage(accept_language_list));
+  translate_prefs.UpdateLanguageList(accept_language_list);
+  EXPECT_EQ("en", TranslateManager::GetTargetLanguage(&translate_prefs));
 }
 
 }  // namespace translate