Create a content::ResourceContext.

chrome/browser/net/chrome_url_request_context.cc

 // 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.
 
 #include "chrome/browser/net/chrome_url_request_context.h"
 
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/io_thread.h"
@@ skipping 356 matching lines @@
     : is_incognito_(false) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 }
 
 void ChromeURLRequestContext::CopyFrom(ChromeURLRequestContext* other) {
   URLRequestContext::CopyFrom(other);
 
   // Copy ChromeURLRequestContext parameters.
   set_user_script_dir_path(other->user_script_dir_path());
   set_appcache_service(other->appcache_service());
-  set_database_tracker(other->database_tracker());
   set_host_content_settings_map(other->host_content_settings_map());
   set_host_zoom_map(other->host_zoom_map_);
   set_blob_storage_context(other->blob_storage_context());
   set_file_system_context(other->file_system_context());
   set_extension_info_map(other->extension_info_map_);
   set_prerender_manager(other->prerender_manager());
   // ChromeURLDataManagerBackend is unique per context.
   set_is_incognito(other->is_incognito());
 }
 
@@ skipping 44 matching lines @@
       net::HttpUtil::GenerateAcceptLanguageHeader(accept_language));
 }
 
 void ChromeURLRequestContext::OnDefaultCharsetChange(
     const std::string& default_charset) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   set_referrer_charset(default_charset);
   set_accept_charset(
       net::HttpUtil::GenerateAcceptCharsetHeader(default_charset));
 }