Revert 202427 "Translate: adopt html lang attribute if valid val..."

trunk/src/chrome/renderer/translate/translate_helper.h

Index: trunk/src/chrome/renderer/translate/translate_helper.h
===================================================================
--- trunk/src/chrome/renderer/translate/translate_helper.h	(revision 202442)
+++ trunk/src/chrome/renderer/translate/translate_helper.h	(working copy)
@@ -96,23 +96,18 @@
                            CLDAgreeWithLanguageCodeHavingCountryCode);
   FRIEND_TEST_ALL_PREFIXES(TranslateHelperTest,
                            InvalidLanguageMetaTagProviding);
-  FRIEND_TEST_ALL_PREFIXES(TranslateHelperTest, AdoptHtmlLang);
 
-  // Corrects language code if it contains well-known mistakes.
+  // Correct language code if it contains well-known mistakes.
   static void CorrectLanguageCodeTypo(std::string* code);
 
-  // Converts language code to the one used in server supporting list.
+  // Convert language code to the one used in server supporting list.
   static void ConvertLanguageCodeSynonym(std::string* code);
 
-  // Resets language code if the specified string is apparently invalid.
+  // Reset language code if the specified string is apparently invalid.
   static void ResetInvalidLanguageCode(std::string* code);
 
-  // Applies a series of language code modification in proper order.
-  static void ApplyLanguageCodeCorrection(std::string* code);
-
-  // Determines content page language from Content-Language code and contents.
+  // Determine content page language from Content-Language code and contents.
   static std::string DeterminePageLanguage(const std::string& code,
-                                           const std::string& html_lang,
                                            const string16& contents,
                                            std::string* cld_language,
                                            bool* is_cld_reliable);