Remove ChromotingHostContext from DnsBlackholeChecker.

remoting/host/dns_blackhole_checker.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 "remoting/host/dns_blackhole_checker.h"
 
 #include "googleurl/src/gurl.h"
 #include "net/url_request/url_fetcher.h"
-#include "remoting/host/chromoting_host_context.h"
+#include "net/url_request/url_request_context_getter.h"
 
 namespace remoting {
 
 // Default prefix added to the base talkgadget URL.
 const char kDefaultHostTalkGadgetPrefix[] = "chromoting-host";
 
 // The base talkgadget URL.
 const char kTalkGadgetUrl[] = ".talkgadget.google.com/talkgadget/"
                               "oauth/chrome-remote-desktop-host";
 
 DnsBlackholeChecker::DnsBlackholeChecker(
-    ChromotingHostContext* context,
+    scoped_refptr<net::URLRequestContextGetter> url_request_context_getter,
     std::string talkgadget_prefix)
-    : context_(context),
+    : url_request_context_getter_(url_request_context_getter),
       talkgadget_prefix_(talkgadget_prefix) {
 }
 
 DnsBlackholeChecker::~DnsBlackholeChecker() {
 }
 
 // This is called in response to the TalkGadget http request initiated from
 // CheckStatus().
 void DnsBlackholeChecker::OnURLFetchComplete(const net::URLFetcher* source) {
   int response = source->GetResponseCode();
@@ skipping 18 matching lines @@
     std::string talkgadget_url("https://");
     if (talkgadget_prefix_.empty()) {
       talkgadget_url += kDefaultHostTalkGadgetPrefix;
     } else {
       talkgadget_url += talkgadget_prefix_;
     }
     talkgadget_url += kTalkGadgetUrl;
     LOG(INFO) << "Verifying connection to " << talkgadget_url;
     url_fetcher_.reset(net::URLFetcher::Create(GURL(talkgadget_url),
                                                net::URLFetcher::GET, this));
-    url_fetcher_->SetRequestContext(context_->url_request_context_getter());
+    url_fetcher_->SetRequestContext(url_request_context_getter_.get());
     url_fetcher_->Start();
   } else {
     LOG(INFO) << "Pending connection check";
   }
 }
 
 }  // namespace remoting