Fix bug: AppShell: CHECK failure in PeerConnection init.

content/shell/browser/shell_url_request_context_getter.cc

 // Copyright 2013 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 "content/shell/browser/shell_url_request_context_getter.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
@@ skipping 73 matching lines @@
   if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree)) {
     proxy_config_service_.reset(
         net::ProxyService::CreateSystemProxyConfigService(
             io_loop_->message_loop_proxy(), file_loop_->message_loop_proxy()));
   }
 }
 
 ShellURLRequestContextGetter::~ShellURLRequestContextGetter() {
 }
 
+net::NetworkDelegate* ShellURLRequestContextGetter::CreateNetworkDelegate() {
+  return new ShellNetworkDelegate;
+}
+
 net::URLRequestContext* ShellURLRequestContextGetter::GetURLRequestContext() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   if (!url_request_context_) {
     const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
     url_request_context_.reset(new net::URLRequestContext());
     url_request_context_->set_net_log(net_log_);
-    network_delegate_.reset(new ShellNetworkDelegate);
+    network_delegate_.reset(CreateNetworkDelegate());
     if (command_line.HasSwitch(switches::kDumpRenderTree))
       ShellNetworkDelegate::SetAcceptAllCookies(false);
     url_request_context_->set_network_delegate(network_delegate_.get());
     storage_.reset(
         new net::URLRequestContextStorage(url_request_context_.get()));
     storage_->set_cookie_store(CreateCookieStore(CookieStoreConfig()));
     storage_->set_channel_id_service(new net::ChannelIDService(
         new net::DefaultChannelIDStore(NULL),
         base::WorkerPool::GetTaskRunner(true)));
     storage_->set_http_user_agent_settings(
@@ skipping 126 matching lines @@
 scoped_refptr<base::SingleThreadTaskRunner>
     ShellURLRequestContextGetter::GetNetworkTaskRunner() const {
   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
 }
 
 net::HostResolver* ShellURLRequestContextGetter::host_resolver() {
   return url_request_context_->host_resolver();
 }
 
 }  // namespace content