Move initialization of ChromeURLRequestContexts to the IO thread.

chrome/browser/net/sdch_dictionary_fetcher.cc

 // Copyright (c) 2006-2008 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/net/sdch_dictionary_fetcher.h"
 
 #include "chrome/browser/profile.h"
 #include "net/url_request/url_request_status.h"
 
 void SdchDictionaryFetcher::Schedule(const GURL& dictionary_url) {
@@ skipping 21 matching lines @@
   MessageLoop::current()->PostDelayedTask(FROM_HERE,
       method_factory_.NewRunnableMethod(&SdchDictionaryFetcher::StartFetching),
       kMsDelayFromRequestTillDownload);
   task_is_pending_ = true;
 }
 
 void SdchDictionaryFetcher::StartFetching() {
   DCHECK(task_is_pending_);
   task_is_pending_ = false;
 
-  URLRequestContext* context = Profile::GetDefaultRequestContext();
+  URLRequestContextGetter* context = Profile::GetDefaultRequestContext();
   if (!context) {
     // Shutdown in progress.
     // Simulate handling of all dictionary requests by clearing queue.
     while (!fetch_queue_.empty())
       fetch_queue_.pop();
     return;
   }
 
   current_fetch_.reset(new URLFetcher(fetch_queue_.front(), URLFetcher::GET,
                                       this));
   fetch_queue_.pop();
   current_fetch_->set_request_context(context);
   current_fetch_->Start();
 }
 
 void SdchDictionaryFetcher::OnURLFetchComplete(const URLFetcher* source,
                                                const GURL& url,
                                                const URLRequestStatus& status,
                                                int response_code,
                                                const ResponseCookies& cookies,
                                                const std::string& data) {
   if ((200 == response_code) && (status.status() == URLRequestStatus::SUCCESS))
     SdchManager::Global()->AddSdchDictionary(data, url);
   current_fetch_.reset(NULL);
   ScheduleDelayedRun();
 }