drive: Move FileSystem::LoadDirectoryIfNeeded to ChangeListLoader

chrome/browser/chromeos/drive/drive_integration_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/drive/drive_integration_service.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "base/prefs/pref_service.h"
@@ skipping 373 matching lines @@
   if (state_ != INITIALIZED) {
     callback.Run(false);
     return;
   }
 
   RemoveDriveMountPoint();
 
   state_ = REMOUNTING;
   // Reloads the Drive app registry.
   drive_app_registry_->Update();
-  // Reloading the file system clears resource metadata and cache.
-  file_system_->Reload(base::Bind(
+  // Resetting the file system clears resource metadata and cache.
+  file_system_->Reset(base::Bind(
       &DriveIntegrationService::AddBackDriveMountPoint,
       weak_ptr_factory_.GetWeakPtr(),
       callback));
 }
 
 void DriveIntegrationService::AddBackDriveMountPoint(
     const base::Callback<void(bool)>& callback,
     FileError error) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   state_ = error == FILE_ERROR_OK ? INITIALIZED : NOT_INITIALIZED;
 
   if (error != FILE_ERROR_OK || !enabled_) {
-    // Failed to reload, or Drive was disabled during the reloading.
+    // Failed to reset, or Drive was disabled during the reset.
     callback.Run(false);
     return;
   }
 
   AddDriveMountPoint();
   callback.Run(true);
 }
 
 void DriveIntegrationService::AddDriveMountPoint() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ skipping 187 matching lines @@
     service = new DriveIntegrationService(profile, preference_watcher,
                                           NULL, base::FilePath(), NULL);
   } else {
     service = factory_for_test_.Run(profile);
   }
 
   return service;
 }
 
 }  // namespace drive