Successful translation erroneously reported on page with too little text

components/translate/core/browser/translate_manager.cc

 // Copyright 2014 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 <map>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 409 matching lines @@
   TranslateErrorDetails error_details;
   error_details.time = base::Time::Now();
   error_details.url = translate_driver_->GetLastCommittedURL();
   error_details.error = error_type;
   g_callback_list_->Notify(error_details);
 }
 
 void TranslateManager::PageTranslated(const std::string& source_lang,
                                       const std::string& target_lang,
                                       TranslateErrors::Type error_type) {
-  language_state_.SetCurrentLanguage(target_lang);
+  if (error_type == TranslateErrors::NONE)
+    language_state_.SetCurrentLanguage(target_lang);
+
   language_state_.set_translation_pending(false);
+  language_state_.set_translation_error(error_type != TranslateErrors::NONE);
 
   if ((error_type == TranslateErrors::NONE) &&
       source_lang != translate::kUnknownLanguageCode &&
       !TranslateDownloadManager::IsSupportedLanguage(source_lang)) {
     error_type = TranslateErrors::UNSUPPORTED_LANGUAGE;
   }
 
   translate_client_->ShowTranslateUI(translate::TRANSLATE_STEP_AFTER_TRANSLATE,
                                      source_lang, target_lang, error_type,
                                      false);
@@ skipping 159 matching lines @@
           source_language) &&
       !ShouldOverrideDecision(
           metrics::TranslateEventProto::LANGUAGE_DISABLED_BY_AUTO_BLACKLIST)) {
     return true;
   }
 
   return false;
 }
 
 }  // namespace translate