Remove #pragma once from content

content/public/common/speech_recognition_error.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_COMMON_SPEECH_RECOGNITION_ERROR_H_
 #define CONTENT_PUBLIC_COMMON_SPEECH_RECOGNITION_ERROR_H_
-#pragma once
 
 namespace content {
 
 // This enumeration follows the values described here:
 // http://www.w3.org/2005/Incubator/htmlspeech/2010/10/google-api-draft.html#speech-input-error
 enum SpeechRecognitionErrorCode {
   // There was no error.
   SPEECH_RECOGNITION_ERROR_NONE = 0,
   // The user or a script aborted speech input.
   SPEECH_RECOGNITION_ERROR_ABORTED,
@@ skipping 31 matching lines @@
   SpeechRecognitionError(SpeechRecognitionErrorCode code_value,
                          SpeechAudioErrorDetails details_value)
       : code(code_value),
         details(details_value) {
   }
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_SPEECH_RECOGNITION_ERROR_H_