Provide mutable members of UrlRequestContext via pure-virtual interface

net/url_request/url_request_context_storage.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 "net/url_request/url_request_context_storage.h"
 
 #include "base/logging.h"
 #include "net/base/cert_verifier.h"
 #include "net/base/host_resolver.h"
 #include "net/base/net_log.h"
@@ skipping 104 matching lines @@
   context_->set_job_factory(job_factory);
   job_factory_.reset(job_factory);
 }
 
 void URLRequestContextStorage::set_throttler_manager(
     URLRequestThrottlerManager* throttler_manager) {
   context_->set_throttler_manager(throttler_manager);
   throttler_manager_.reset(throttler_manager);
 }
 
+void URLRequestContextStorage::set_http_user_agent_settings(
+    HttpUserAgentSettings* http_user_agent_settings) {
+  context_->set_http_user_agent_settings(http_user_agent_settings);
+  http_user_agent_settings_.reset(http_user_agent_settings);
+}
+
 }  // namespace net