Add drive::FileSystem::GetFileByPathForSaving().

chrome/browser/chromeos/drive/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_DRIVE_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 22 matching lines @@
 
 class DriveServiceInterface;
 class FileCacheEntry;
 class FileSystemObserver;
 class JobScheduler;
 
 namespace internal {
 class ChangeListLoader;
 class ResourceMetadata;
 class SyncClient;
+class FileWriteWatcher;
 }  // namespace internal
 
 namespace file_system {
 class CopyOperation;
 class CreateDirectoryOperation;
 class CreateFileOperation;
 class DownloadOperation;
+class GetFileForSavingOperation;
 class MoveOperation;
 class OpenFileOperation;
 class OperationObserver;
 class RemoveOperation;
 class SearchOperation;
 class TouchOperation;
 class TruncateOperation;
 class UpdateOperation;
 }  // namespace file_system
 
@@ skipping 56 matching lines @@
                          const FileOperationCallback& callback) OVERRIDE;
   virtual void TruncateFile(const base::FilePath& file_path,
                             int64 length,
                             const FileOperationCallback& callback) OVERRIDE;
   virtual void Pin(const base::FilePath& file_path,
                    const FileOperationCallback& callback) OVERRIDE;
   virtual void Unpin(const base::FilePath& file_path,
                      const FileOperationCallback& callback) OVERRIDE;
   virtual void GetFileByPath(const base::FilePath& file_path,
                              const GetFileCallback& callback) OVERRIDE;
+  virtual void GetFileByPathForSaving(const base::FilePath& file_path,
+                                      const GetFileCallback& callback) OVERRIDE;
   virtual void GetFileContentByPath(
       const base::FilePath& file_path,
       const GetFileContentInitializedCallback& initialized_callback,
       const google_apis::GetContentCallback& get_content_callback,
       const FileOperationCallback& completion_callback) OVERRIDE;
   virtual void GetResourceEntryByPath(
       const base::FilePath& file_path,
       const GetResourceEntryCallback& callback) OVERRIDE;
   virtual void ReadDirectoryByPath(
       const base::FilePath& directory_path,
@@ skipping 157 matching lines @@
 
   // Error of the last update check.
   FileError last_update_check_error_;
 
   // True if hosted documents should be hidden.
   bool hide_hosted_docs_;
 
   scoped_ptr<PrefChangeRegistrar> pref_registrar_;
 
   scoped_ptr<internal::SyncClient> sync_client_;
+  scoped_ptr<internal::FileWriteWatcher> file_write_watcher_;
 
   // The loader is used to load the change lists.
   scoped_ptr<internal::ChangeListLoader> change_list_loader_;
 
   ObserverList<FileSystemObserver> observers_;
 
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
 
   base::FilePath temporary_file_directory_;
 
   // Implementation of each file system operation.
   scoped_ptr<file_system::CopyOperation> copy_operation_;
   scoped_ptr<file_system::CreateDirectoryOperation> create_directory_operation_;
   scoped_ptr<file_system::CreateFileOperation> create_file_operation_;
   scoped_ptr<file_system::MoveOperation> move_operation_;
   scoped_ptr<file_system::OpenFileOperation> open_file_operation_;
   scoped_ptr<file_system::RemoveOperation> remove_operation_;
   scoped_ptr<file_system::TouchOperation> touch_operation_;
   scoped_ptr<file_system::TruncateOperation> truncate_operation_;
   scoped_ptr<file_system::DownloadOperation> download_operation_;
   scoped_ptr<file_system::UpdateOperation> update_operation_;
   scoped_ptr<file_system::SearchOperation> search_operation_;
+  scoped_ptr<file_system::GetFileForSavingOperation>
+      get_file_for_saving_operation_;
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<FileSystem> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystem);
 };
 
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_H_