Fix translate namespace

components/translate/core/browser/page_translated_details.h

 // 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.
 
 #ifndef COMPONENTS_TRANSLATE_CORE_BROWSER_PAGE_TRANSLATED_DETAILS_H_
 #define COMPONENTS_TRANSLATE_CORE_BROWSER_PAGE_TRANSLATED_DETAILS_H_
 
 #include <string>
 
 #include "components/translate/core/common/translate_errors.h"
 
+namespace translate {
+
 // Used when sending a notification about a page that has been translated.
 struct PageTranslatedDetails {
   std::string source_language;
   std::string target_language;
   TranslateErrors::Type error_type;
 };
 
+}  // namespace translate
+
 #endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_PAGE_TRANSLATED_DETAILS_H_