Remove #pragma once from content

content/browser/renderer_host/media/audio_input_renderer_host.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.
 //
 // AudioInputRendererHost serves audio related requests from audio capturer
 // which lives inside the render process and provide access to audio hardware.
 //
 // Create stream sequence (AudioInputController = AIC):
 //
 // AudioInputHostMsg_CreateStream -> OnCreateStream -> AIC::CreateLowLatency ->
@@ skipping 27 matching lines @@
 //
 // This class is owned by BrowserRenderProcessHost and instantiated on UI
 // thread. All other operations and method calls happen on IO thread, so we
 // need to be extra careful about the lifetime of this object.
 //
 // To ensure low latency audio, a SyncSocket pair is used to signal buffer
 // readiness without having to route messages using the IO thread.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_RENDERER_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_RENDERER_HOST_H_
-#pragma once
 
 #include <map>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/process.h"
 #include "base/sequenced_task_runner_helpers.h"
@@ skipping 150 matching lines @@
   AudioEntryMap audio_entries_;
 
   // A map of session IDs to audio session sources.
   typedef std::map<int, int> SessionEntryMap;
   SessionEntryMap session_entries_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioInputRendererHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_RENDERER_HOST_H_