Drive: Removes unused cache files after the initial feed fetch.

chrome/browser/chromeos/gdata/gdata_file_system.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 17 matching lines @@
 
 class SequencedTaskRunner;
 
 }  // namespace base
 
 namespace gdata {
 
 class DocumentsServiceInterface;
 class DriveWebAppsRegistryInterface;
 class GDataWapiFeedLoader;
+class StaleCacheFilesRemover;
 struct UploadFileInfo;
 
 // The production implementation of GDataFileSystemInterface.
 class GDataFileSystem : public GDataFileSystemInterface,
                         public GDataWapiFeedLoader::Observer,
                         public content::NotificationObserver {
  public:
   GDataFileSystem(Profile* profile,
                   GDataCache* cache,
                   DocumentsServiceInterface* documents_service,
@@ skipping 802 matching lines @@
   bool hide_hosted_docs_;
 
   // The set of paths opened by OpenFile but not yet closed by CloseFile.
   std::set<FilePath> open_files_;
 
   scoped_ptr<PrefChangeRegistrar> pref_registrar_;
 
   // The loader is used to load the feeds.
   scoped_ptr<GDataWapiFeedLoader> feed_loader_;
 
+  // The remover is used to remove stale cache files.
+  scoped_ptr<StaleCacheFilesRemover> stale_cache_files_remover_;
+
   ObserverList<GDataFileSystemInterface::Observer> observers_;
 
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
 
   // WeakPtrFactory and WeakPtr bound to the UI thread.
   // Note: These should remain the last member so they'll be destroyed and
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<GDataFileSystem> ui_weak_ptr_factory_;
   // Unlike other classes, we need this as we need this to redirect a task
   // from IO thread to UI thread.
   base::WeakPtr<GDataFileSystem> ui_weak_ptr_;
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_