Translate: language list smart updater

chrome/browser/translate/translate_manager_browsertest.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 <algorithm>
 #include <set>
 #include <vector>
 
 #include "base/json/json_writer.h"
@@ skipping 613 matching lines @@
   std::vector<std::string> server_languages;
   // A list of languages to fake being returned by the translate server.
   server_languages.push_back("aa");
   server_languages.push_back("bb");
   server_languages.push_back("ab");
   server_languages.push_back("en-CA");
   server_languages.push_back("zz");
   server_languages.push_back("yy");
   server_languages.push_back("fr-FR");
 
-  // First, get the default languages list:
+  // First, get the default languages list. Note that calling
+  // GetSupportedLanguages() invokes RequestLanguageList() internally.
   std::vector<std::string> default_supported_languages;
   TranslateManager::GetSupportedLanguages(&default_supported_languages);
   // To make sure we got the defaults and don't confuse them with the mocks.
   ASSERT_NE(default_supported_languages.size(), server_languages.size());
 
-  Profile* profile =
-      Profile::FromBrowserContext(web_contents()->GetBrowserContext());
-  PrefService* prefs = profile->GetPrefs();
-  TranslateManager::GetInstance()->FetchLanguageListFromTranslateServer(prefs);
 
   // Check that we still get the defaults until the URLFetch has completed.
   std::vector<std::string> current_supported_languages;
   TranslateManager::GetSupportedLanguages(&current_supported_languages);
   EXPECT_EQ(default_supported_languages, current_supported_languages);
 
   // Also check that it didn't change if we failed the URL fetch.
   SimulateSupportedLanguagesURLFetch(false, std::vector<std::string>());
   current_supported_languages.clear();
   TranslateManager::GetSupportedLanguages(&current_supported_languages);
   EXPECT_EQ(default_supported_languages, current_supported_languages);
 
   // Now check that we got the appropriate set of languages from the server.
-  TranslateManager::GetInstance()->FetchLanguageListFromTranslateServer(prefs);
   SimulateSupportedLanguagesURLFetch(true, server_languages);
   current_supported_languages.clear();
   TranslateManager::GetSupportedLanguages(&current_supported_languages);
   // Not sure we need to guarantee the order of languages, so we find them.
   EXPECT_EQ(server_languages.size(), current_supported_languages.size());
   for (size_t i = 0; i < server_languages.size(); ++i) {
     EXPECT_NE(current_supported_languages.end(),
               std::find(current_supported_languages.begin(),
                         current_supported_languages.end(),
                         server_languages[i]));
@@ skipping 855 matching lines @@
   WebContents* current_web_contents =
       browser()->tab_strip_model()->GetActiveWebContents();
   content::Source<WebContents> source(current_web_contents);
 
   ui_test_utils::WindowedNotificationObserverWithDetails<
     LanguageDetectionDetails>
       fr_language_detected_signal(chrome::NOTIFICATION_TAB_LANGUAGE_DETERMINED,
                                   source);
   fr_language_detected_signal.Wait();
 }