Create a about handler component.

chrome/browser/net/about_protocol_handler.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 CHROME_BROWSER_NET_ABOUT_PROTOCOL_HANDLER_H_
-#define CHROME_BROWSER_NET_ABOUT_PROTOCOL_HANDLER_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "net/url_request/url_request_job_factory.h"
-
-namespace chrome_browser_net {
-
-// Implements a ProtocolHandler for About jobs.
-class AboutProtocolHandler : public net::URLRequestJobFactory::ProtocolHandler {
- public:
-  AboutProtocolHandler();
-  net::URLRequestJob* MaybeCreateJob(
-      net::URLRequest* request,
-      net::NetworkDelegate* network_delegate) const override;
-  bool IsSafeRedirectTarget(const GURL& location) const override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(AboutProtocolHandler);
-};
-
-}  // namespace chrome_browser_net
-
-#endif  // CHROME_BROWSER_NET_ABOUT_PROTOCOL_HANDLER_H_