Translate: make alpha language support enabled by default

chrome/browser/translate/translate_language_list.h

 // Copyright 2013 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_TRANSLATE_TRANSLATE_LANGUAGE_LIST_H_
 #define CHROME_BROWSER_TRANSLATE_TRANSLATE_LANGUAGE_LIST_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 10 matching lines @@
 // This class is defined to be owned only by TranslateManager.
 class TranslateLanguageList : public net::URLFetcherDelegate {
  public:
   TranslateLanguageList();
   virtual ~TranslateLanguageList();
 
   // net::URLFetcherDelegate implementation:
   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
 
   // Fills |languages| with the list of languages that the translate server can
-  // translate to and from. If alpha language support is enabled, it fills
-  // |languages| with the list of all supporting languages including alpha
-  // languages.
+  // translate to and from. |languages| will include alpha languages.
   void GetSupportedLanguages(std::vector<std::string>* languages);
 
   // Returns the language code that can be used with the Translate method for a
   // specified |chrome_locale|.
   std::string GetLanguageCode(const std::string& chrome_locale);
 
-  // Returns true if |language| is supported by the translation server. If alpha
-  // language support is enabled, also returns true if |language| is in alpha
-  // language list.
+  // Returns true if |language| is supported by the translation server. It also
+  // returns true against alpha languages.
   bool IsSupportedLanguage(const std::string& language);
 
   // Returns true if |language| is supported by the translation server as a
   // alpha language.
   bool IsAlphaLanguage(const std::string& language);
 
   // Fetches the language list from the translate server. It will not retry
   // more than kMaxRetryLanguageListFetch times.
   void RequestLanguageList();
 
@@ skipping 20 matching lines @@
   scoped_ptr<net::URLFetcher> language_list_fetcher_;
 
   // An URLFetcher instance to fetch a server providing supported alpha language
   // list.
   scoped_ptr<net::URLFetcher> alpha_language_list_fetcher_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateLanguageList);
 };
 
 #endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_LANGUAGE_LIST_H_