[DevTools] Move SystemInfo domain to generated handler

content/browser/devtools/devtools_system_info_handler.h

-// Copyright 2013 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_BROWSER_DEVTOOLS_DEVTOOLS_SYSTEM_INFO_HANDLER_H_
-#define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_SYSTEM_INFO_HANDLER_H_
-
-#include "content/browser/devtools/devtools_protocol.h"
-
-namespace content {
-
-// This class provides information to DevTools about the system it's running on.
-class DevToolsSystemInfoHandler
-    : public DevToolsProtocol::Handler {
- public:
-  DevToolsSystemInfoHandler();
-  ~DevToolsSystemInfoHandler() override;
-
- private:
-  scoped_refptr<DevToolsProtocol::Response> OnGetInfo(
-      scoped_refptr<DevToolsProtocol::Command> command);
-
-  DISALLOW_COPY_AND_ASSIGN(DevToolsSystemInfoHandler);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_SYSTEM_INFO_HANDLER_H_