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

chrome/browser/chromeos/gdata/drive_system_service.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 "chrome/browser/chromeos/gdata/drive_system_service.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/gdata/drive_api_service.h"
 #include "chrome/browser/chromeos/gdata/drive_file_system.h"
 #include "chrome/browser/chromeos/gdata/drive_file_system_proxy.h"
 #include "chrome/browser/chromeos/gdata/drive_webapps_registry.h"
 #include "chrome/browser/chromeos/gdata/file_write_helper.h"
 #include "chrome/browser/chromeos/gdata/gdata_download_observer.h"
 #include "chrome/browser/chromeos/gdata/gdata_sync_client.h"
 #include "chrome/browser/chromeos/gdata/gdata_uploader.h"
 #include "chrome/browser/chromeos/gdata/gdata_util.h"
 #include "chrome/browser/chromeos/gdata/gdata_wapi_service.h"
+#include "chrome/browser/chromeos/gdata/stale_cache_files_remover.h"
 #include "chrome/browser/download/download_service.h"
 #include "chrome/browser/download/download_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "webkit/fileapi/file_system_context.h"
 #include "webkit/fileapi/file_system_mount_point_provider.h"
 
 using content::BrowserContext;
@@ skipping 37 matching lines @@
   file_system_.reset(new DriveFileSystem(profile_,
                                          cache(),
                                          drive_service_.get(),
                                          uploader(),
                                          webapps_registry(),
                                          blocking_task_runner_));
   file_write_helper_.reset(new FileWriteHelper(file_system()));
   download_observer_.reset(new GDataDownloadObserver(uploader(),
                                                      file_system()));
   sync_client_.reset(new GDataSyncClient(profile_, file_system(), cache()));
+  stale_cache_files_remover_.reset(new StaleCacheFilesRemover(file_system(),
+                                                              cache()));
 
   sync_client_->Initialize();
   file_system_->Initialize();
   cache_->RequestInitializeOnUIThread();
 
   content::DownloadManager* download_manager =
     g_browser_process->download_status_updater() ?
         BrowserContext::GetDownloadManager(profile_) : NULL;
   download_observer_->Initialize(
       download_manager,
       cache_->GetCacheDirectoryPath(
           DriveCache::CACHE_TYPE_TMP_DOWNLOADS));
 
   AddDriveMountPoint();
 }
 
 void DriveSystemService::Shutdown() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   RemoveDriveMountPoint();
 
   // Shut down the member objects in the reverse order of creation.
+  stale_cache_files_remover_.reset();
   sync_client_.reset();
   download_observer_.reset();
   file_write_helper_.reset();
   file_system_.reset();
   webapps_registry_.reset();
   uploader_.reset();
   drive_service_.reset();
 }
 
 void DriveSystemService::ClearCacheAndRemountFileSystem(
@@ skipping 111 matching lines @@
       g_test_cache_root ? FilePath(*g_test_cache_root) :
                           DriveCache::GetCacheRootPath(profile);
   delete g_test_cache_root;
   g_test_cache_root = NULL;
 
   service->Initialize(drive_service, cache_root);
   return service;
 }
 
 }  // namespace gdata