Introduce SystemNetworkContextManager.

chrome/browser/ui/webui/net_internals/net_internals_ui.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/ui/webui/net_internals/net_internals_ui.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 1009 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (pending_entries_)
     SendJavascriptCommand("receivedLogEntries", std::move(pending_entries_));
 }
 
 void NetInternalsMessageHandler::IOThreadImpl::PrePopulateEventList() {
   // Using a set removes any duplicates.
   std::set<net::URLRequestContext*> contexts;
   for (const auto& getter : context_getters_)
     contexts.insert(getter->GetURLRequestContext());
-  contexts.insert(io_thread_->globals()->system_request_context.get());
+  contexts.insert(io_thread_->globals()->system_request_context);
 
   // Add entries for ongoing network objects.
   CreateNetLogEntriesForActiveObjects(contexts, this);
 }
 
 void NetInternalsMessageHandler::IOThreadImpl::SendNetInfo(int info_sources) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   SendJavascriptCommand("receivedNetInfo",
                         net::GetNetInfo(GetMainContext(), info_sources));
 }
 
 }  // namespace
 
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // NetInternalsUI
 //
 ////////////////////////////////////////////////////////////////////////////////
 
 NetInternalsUI::NetInternalsUI(content::WebUI* web_ui)
     : WebUIController(web_ui) {
   web_ui->AddMessageHandler(base::MakeUnique<NetInternalsMessageHandler>());
 
   // Set up the chrome://net-internals/ source.
   Profile* profile = Profile::FromWebUI(web_ui);
   content::WebUIDataSource::Add(profile, CreateNetInternalsHTMLSource());
 }