Fix translate namespace

components/translate/core/browser/translate_error_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_TRANSLATE_ERROR_DETAILS_H_
 #define COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_ERROR_DETAILS_H_
 
 #include "base/time/time.h"
 #include "components/translate/core/common/translate_errors.h"
 #include "url/gurl.h"
 
+namespace translate {
+
 struct TranslateErrorDetails {
   // The time when this was created
   base::Time time;
 
   // The URL
   GURL url;
 
   // Translation error type
   TranslateErrors::Type error;
 };
 
+}  // namespace translate
+
 #endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_ERROR_DETAILS_H_