Create base::WorkerPoolJob. Use it for HostResolverImpl and DirectoryLister.

chrome/browser/dom_ui/filebrowse_ui.cc

 // Copyright (c) 2010 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/dom_ui/filebrowse_ui.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/callback.h"
 #include "base/command_line.h"
@@ skipping 75 matching lines @@
 
  private:
   ~FileBrowseUIHTMLSource() {}
 
   DISALLOW_COPY_AND_ASSIGN(FileBrowseUIHTMLSource);
 };
 
 class TaskProxy;
 
 // The handler for Javascript messages related to the "filebrowse" view.
-class FilebrowseHandler : public net::DirectoryLister::DirectoryListerDelegate,
+class FilebrowseHandler : public net::DirectoryLister::Delegate,
                           public DOMMessageHandler,
 #if defined(OS_CHROMEOS)
                           public chromeos::MountLibrary::Observer,
 #endif
                           public base::SupportsWeakPtr<FilebrowseHandler>,
                           public URLFetcher::Delegate,
                           public DownloadManager::Observer,
                           public DownloadItem::Observer {
  public:
   FilebrowseHandler();
   virtual ~FilebrowseHandler();
 
   // Init work after Attach.
   void Init();
 
-  // DirectoryLister::DirectoryListerDelegate methods:
-  virtual void OnListFile(
-      const net::DirectoryLister::DirectoryListerData& data);
+  // DirectoryLister::Delegate methods:
+  virtual void OnListFile(const net::DirectoryLister::Data& data);
   virtual void OnListDone(int error);
 
   // DOMMessageHandler implementation.
   virtual DOMMessageHandler* Attach(DOMUI* dom_ui);
   virtual void RegisterMessages();
 
 #if defined(OS_CHROMEOS)
   void MountChanged(chromeos::MountLibrary* obj,
                     chromeos::MountEventType evt,
                     const std::string& path);
@@ skipping 82 matching lines @@
   void SendNewDownload(DownloadItem* download);
 
   scoped_ptr<ListValue> filelist_value_;
   FilePath currentpath_;
   Profile* profile_;
   TabContents* tab_contents_;
   std::string current_file_contents_;
   std::string current_file_uploaded_;
   int upload_response_code_;
   TaskProxy* current_task_;
-  scoped_refptr<net::DirectoryLister> lister_;
+  scoped_ptr<net::DirectoryLister> lister_;
   bool is_refresh_;
   scoped_ptr<URLFetcher> fetch_;
 
   DownloadManager* download_manager_;
   typedef std::vector<DownloadItem*> DownloadList;
   DownloadList active_download_items_;
   DownloadList download_items_;
   bool got_first_download_list_;
   DISALLOW_COPY_AND_ASSIGN(FilebrowseHandler);
 };
@@ skipping 150 matching lines @@
 // FilebrowseHandler
 //
 ////////////////////////////////////////////////////////////////////////////////
 FilebrowseHandler::FilebrowseHandler()
     : profile_(NULL),
       tab_contents_(NULL),
       is_refresh_(false),
       fetch_(NULL),
       download_manager_(NULL),
       got_first_download_list_(false) {
-  lister_ = NULL;
 #if defined(OS_CHROMEOS)
   chromeos::MountLibrary* lib =
       chromeos::CrosLibrary::Get()->GetMountLibrary();
   lib->AddObserver(this);
 #endif
 }
 
 FilebrowseHandler::~FilebrowseHandler() {
 #if defined(OS_CHROMEOS)
   chromeos::MountLibrary* lib =
       chromeos::CrosLibrary::Get()->GetMountLibrary();
   lib->RemoveObserver(this);
 #endif
-  if (lister_.get()) {
-    lister_->Cancel();
-    lister_->set_delegate(NULL);
-  }
 
   ClearDownloadItems();
   download_manager_->RemoveObserver(this);
   URLFetcher* fetch = fetch_.release();
   if (fetch) {
     TaskProxy* task = new TaskProxy(AsWeakPtr(), currentpath_);
     task->AddRef();
     BrowserThread::PostTask(
         BrowserThread::FILE, FROM_HERE,
         NewRunnableMethod(
@@ skipping 390 matching lines @@
       BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(
           task, &TaskProxy::ReadInFileProxy));
 #endif
 }
 
 void FilebrowseHandler::GetChildrenForPath(FilePath& path, bool is_refresh) {
   filelist_value_.reset(new ListValue());
   currentpath_ = path;
 
-  if (lister_.get()) {
-    lister_->Cancel();
-    lister_->set_delegate(NULL);
-    lister_ = NULL;
-  }
-
+  lister_.reset();
   is_refresh_ = is_refresh;
 
 #if defined(OS_CHROMEOS)
   // Don't allow listing files in inaccessible dirs.
   if (net::URLRequestFileJob::AccessDisabled(path))
     return;
 #endif  // OS_CHROMEOS
 
   FilePath default_download_path;
   if (!PathService::Get(chrome::DIR_DEFAULT_DOWNLOADS,
                         &default_download_path)) {
     NOTREACHED();
   }
   if (currentpath_ == default_download_path) {
-    lister_ = new net::DirectoryLister(currentpath_,
-                                       false,
-                                       net::DirectoryLister::DATE,
-                                       this);
+    lister_.reset(new net::DirectoryLister(currentpath_,
+                                           false,
+                                           net::DirectoryLister::DATE,
+                                           this));
   } else {
-    lister_ = new net::DirectoryLister(currentpath_, this);
+    lister_.reset(new net::DirectoryLister(currentpath_, this));
   }
   lister_->Start();
 }
 
 void FilebrowseHandler::HandleGetChildren(const ListValue* args) {
 #if defined(OS_CHROMEOS)
   std::string path = WideToUTF8(ExtractStringValue(args));
   FilePath currentpath(path);
   filelist_value_.reset(new ListValue());
 
   GetChildrenForPath(currentpath, false);
 #endif
 }
 
-void FilebrowseHandler::OnListFile(
-    const net::DirectoryLister::DirectoryListerData& data) {
+void FilebrowseHandler::OnListFile(const net::DirectoryLister::Data& data) {
 #if defined(OS_WIN)
   if (data.info.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) {
     return;
   }
 #elif defined(OS_POSIX)
   if (data.info.filename[0] == '.') {
     return;
   }
 #endif
 
@@ skipping 336 matching lines @@
     }
   }
 
   return NULL;
 }
 
 const int FileBrowseUI::kPopupWidth = 250;
 const int FileBrowseUI::kPopupHeight = 300;
 const int FileBrowseUI::kSmallPopupWidth = 250;
 const int FileBrowseUI::kSmallPopupHeight = 50;