Remove #pragma once from content

content/public/browser/speech_recognition_manager_delegate.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_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
-#pragma once
 
 #include <string>
 
 #include "base/callback_forward.h"
 #include "content/public/common/speech_recognition_error.h"
 
 namespace content {
 
 class SpeechRecognitionEventListener;
 struct SpeechRecognitionResult;
@@ skipping 14 matching lines @@
       base::Callback<void(int session_id, bool is_allowed)> callback) = 0;
 
   // Checks whether the delegate is interested (returning a non NULL ptr) or not
   // (returning NULL) in receiving a copy of all sessions events.
   virtual SpeechRecognitionEventListener* GetEventListener() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_