Fetch SDCH dictionary as soon as current URL fetch completes...

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"
 
 void SdchDictionaryFetcher::Schedule(const GURL& dictionary_url) {
   // Avoid pushing duplicate copy onto queue.  We may fetch this url again later
   // and get a different dictionary, but there is no reason to have it in the
   // queue twice at one time.
   if (!fetch_queue_.empty() && fetch_queue_.back() == dictionary_url) {
     SdchManager::SdchErrorRecovery(
         SdchManager::DICTIONARY_ALREADY_SCHEDULED_TO_DOWNLOAD);
     return;
   }
   fetch_queue_.push(dictionary_url);
   ScheduleDelayedRun();
 }
 
-// TODO(jar): If QOS low priority is supported, switch to using that instead of
-// just waiting to do the fetch.
 void SdchDictionaryFetcher::ScheduleDelayedRun() {
   if (fetch_queue_.empty() || current_fetch_.get() || task_is_pending_)
     return;
   MessageLoop::current()->PostDelayedTask(FROM_HERE,
       method_factory_.NewRunnableMethod(&SdchDictionaryFetcher::StartFetching),
       kMsDelayFromRequestTillDownload);
   task_is_pending_ = true;
 }
 
 void SdchDictionaryFetcher::StartFetching() {
@@ skipping 11 matching lines @@
                                                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();
 }