Create a about handler component.

chrome/browser/profiles/off_the_record_profile_io_data.cc

 // 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.
 
 #include "chrome/browser/profiles/off_the_record_profile_io_data.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
 #include "base/threading/worker_pool.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
 #include "chrome/browser/io_thread.h"
-#include "chrome/browser/net/about_protocol_handler.h"
 #include "chrome/browser/net/chrome_net_log.h"
 #include "chrome/browser/net/chrome_network_delegate.h"
 #include "chrome/browser/net/chrome_url_request_context_getter.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
+#include "components/about_handler/about_protocol_handler.h"

[droger, 2015/08/13 08:53:34]

Delete this line.

[Jitu( very slow this week), 2015/08/13 14:15:03]

Done.

 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/cookie_store_factory.h"
 #include "content/public/browser/resource_context.h"
 #include "extensions/common/constants.h"
 #include "net/base/sdch_manager.h"
 #include "net/ftp/ftp_network_layer.h"
 #include "net/http/http_cache.h"
 #include "net/http/http_network_session.h"
 #include "net/http/http_server_properties_impl.h"
 #include "net/sdch/sdch_owner.h"
@@ skipping 368 matching lines @@
   return app_request_context;
 }
 
 net::URLRequestContext*
 OffTheRecordProfileIOData::AcquireIsolatedMediaRequestContext(
     net::URLRequestContext* app_context,
     const StoragePartitionDescriptor& partition_descriptor) const {
   NOTREACHED();
   return NULL;
 }