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

chrome/browser/chromeos/gdata/gdata_file_system.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/gdata_file_system.h"
 
 #include <set>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "base/metrics/histogram.h"
 #include "base/platform_file.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/gdata/documents_service_interface.h"
 #include "chrome/browser/chromeos/gdata/drive_api_parser.h"
 #include "chrome/browser/chromeos/gdata/drive_webapps_registry.h"
 #include "chrome/browser/chromeos/gdata/gdata.pb.h"
 #include "chrome/browser/chromeos/gdata/gdata_download_observer.h"
 #include "chrome/browser/chromeos/gdata/gdata_files.h"
 #include "chrome/browser/chromeos/gdata/gdata_protocol_handler.h"
 #include "chrome/browser/chromeos/gdata/gdata_system_service.h"
 #include "chrome/browser/chromeos/gdata/gdata_uploader.h"
 #include "chrome/browser/chromeos/gdata/gdata_util.h"
+#include "chrome/browser/chromeos/gdata/stale_cache_files_remover.h"
 #include "chrome/browser/chromeos/gdata/task_util.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "net/base/mime_util.h"
 
 using content::BrowserThread;
@@ skipping 398 matching lines @@
 
   documents_service_->Initialize(profile_);
 
   directory_service_.reset(new GDataDirectoryService);
   feed_loader_.reset(new GDataWapiFeedLoader(directory_service_.get(),
                                              documents_service_,
                                              webapps_registry_,
                                              cache_,
                                              blocking_task_runner_));
   feed_loader_->AddObserver(this);
+  stale_cache_files_remover_.reset(new StaleCacheFilesRemover(this, cache_));
 
   PrefService* pref_service = profile_->GetPrefs();
   hide_hosted_docs_ = pref_service->GetBoolean(prefs::kDisableGDataHostedFiles);
 
   InitializePreferenceObserver();
 }
 
 void GDataFileSystem::CheckForUpdates() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   ContentOrigin initial_origin = directory_service_->origin();
@@ skipping 2846 matching lines @@
     return;
   }
 
   PlatformFileInfoProto entry_file_info;
   GDataEntry::ConvertPlatformFileInfoToProto(*file_info, &entry_file_info);
   *entry_proto->mutable_file_info() = entry_file_info;
   callback.Run(GDATA_FILE_OK, entry_proto.Pass());
 }
 
 }  // namespace gdata