Remove ChromotingHostContext from DnsBlackholeChecker.

remoting/host/remoting_me2me_host.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.
 //
 // This file implements a standalone host process for Me2Me.
 
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
@@ skipping 504 matching lines @@
 
     if (shutting_down_)
       return;
 
     signal_strategy_.reset(
         new XmppSignalStrategy(context_->url_request_context_getter(),
                                xmpp_login_, xmpp_auth_token_,
                                xmpp_auth_service_));
 
     scoped_ptr<DnsBlackholeChecker> dns_blackhole_checker(
-        new DnsBlackholeChecker(context_.get(), talkgadget_prefix_));
+        new DnsBlackholeChecker(context_->url_request_context_getter(),
+                                talkgadget_prefix_));
 
     signaling_connector_.reset(new SignalingConnector(
         signal_strategy_.get(), context_.get(), dns_blackhole_checker.Pass(),
         base::Bind(&HostProcess::OnAuthFailed, base::Unretained(this))));
 
     if (!oauth_refresh_token_.empty()) {
       OAuthClientInfo client_info = {
         kUnofficialOAuth2ClientId,
         kUnofficialOAuth2ClientSecret
       };
@@ skipping 291 matching lines @@
             user32.GetFunctionPointer("SetProcessDPIAware"));
     set_process_dpi_aware();
   }
 
   // CommandLine::Init() ignores the passed |argc| and |argv| on Windows getting
   // the command line from GetCommandLineW(), so we can safely pass NULL here.
   return main(0, NULL);
 }
 
 #endif  // defined(OS_WIN)