Translate: split language code typo correction to apply unit tests.

chrome/renderer/translate_helper.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_RENDERER_TRANSLATE_HELPER_H_
 #define CHROME_RENDERER_TRANSLATE_HELPER_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
@@ skipping 48 matching lines @@
   // Asks the Translate element in the page what the language of the page is.
   // Can only be called if a translation has happened and was successful.
   // Returns the language code on success, an empty string on failure.
   virtual std::string GetOriginalPageLanguage();
 
   // Used in unit-tests. Makes the various tasks be posted immediately so that
   // the tests don't have to wait before checking states.
   virtual bool DontDelayTasks();
 
  private:
+  FRIEND_TEST_ALL_PREFIXES(TranslateHelperTest, LanguageCodeTypoCorrection);
   FRIEND_TEST_ALL_PREFIXES(TranslateHelperTest, LanguageCodeSynonyms);
 
+  // Correct language code if it contains well-known mistakes.
+  static void CorrectLanguageCodeTypo(std::string* code);
+
   // Convert language code to the one used in server supporting list.
   static void ConvertLanguageCodeSynonym(std::string* code);
 
   // Returns whether the page associated with |document| is a candidate for
   // translation.  Some pages can explictly specify (via a meta-tag) that they
   // should not be translated.
   static bool IsPageTranslatable(WebKit::WebDocument* document);
 
 #if defined(ENABLE_LANGUAGE_DETECTION)
   // Returns the ISO 639_1 language code of the specified |text|, or 'unknown'
@@ skipping 49 matching lines @@
   std::string source_lang_;
   std::string target_lang_;
 
   // Method factory used to make calls to TranslatePageImpl.
   base::WeakPtrFactory<TranslateHelper> weak_method_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateHelper);
 };
 
 #endif  // CHROME_RENDERER_TRANSLATE_HELPER_H_