Files.app: Provide detailed change information on onDirectoryChanged event

chrome/browser/chromeos/drive/file_system/touch_operation.cc

 // Copyright 2013 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/file_system/touch_operation.h"
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/sequenced_task_runner.h"
 #include "base/time/time.h"
+#include "chrome/browser/chromeos/drive/file_change.h"
 #include "chrome/browser/chromeos/drive/file_errors.h"
 #include "chrome/browser/chromeos/drive/file_system/operation_observer.h"
 #include "chrome/browser/chromeos/drive/resource_metadata.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
 namespace drive {
 namespace file_system {
 
@@ skipping 60 matching lines @@
 }
 
 void TouchOperation::TouchFileAfterUpdateLocalState(
     const base::FilePath& file_path,
     const FileOperationCallback& callback,
     const std::string* local_id,
     FileError error) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
+  FileChange changed_files;
+  changed_files.Update(file_path,
+                       FileChange::FILE_TYPE_FILE,
+                       FileChange::ADD_OR_UPDATE);
+
   if (error == FILE_ERROR_OK) {
-    observer_->OnDirectoryChangedByOperation(file_path.DirName());
+    observer_->OnDirectoryChangedByOperation(changed_files);
     observer_->OnEntryUpdatedByOperation(*local_id);
   }
   callback.Run(error);
 }
 
 }  // namespace file_system
 }  // namespace drive