Remove #pragma once from content

content/public/browser/devtools_agent_host_registry.h

 // Copyright (c) 2011 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_DEVTOOLS_AGENT_HOST_REGISTRY_H_
 #define CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_REGISTRY_H_
-#pragma once
 
 #include "content/common/content_export.h"
 
 namespace content {
 
 class DevToolsAgentHost;
 class RenderViewHost;
 class WebContents;
 
 class CONTENT_EXPORT DevToolsAgentHostRegistry {
@@ skipping 15 matching lines @@
   static DevToolsAgentHost* GetDevToolsAgentHostForWorker(
       int worker_process_id,
       int worker_route_id);
 
   static bool IsDebuggerAttached(WebContents* web_contents);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_REGISTRY_H_