Create fileapi/ subdirectory under c/b/cros/drive.

chrome/browser/chromeos/drive/webkit_file_stream_writer_impl.h

-// 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.
-
-#ifndef CHROME_BROWSER_CHROMEOS_DRIVE_WEBKIT_FILE_STREAM_WRITER_IMPL_H_
-#define CHROME_BROWSER_CHROMEOS_DRIVE_WEBKIT_FILE_STREAM_WRITER_IMPL_H_
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/files/file.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "webkit/browser/fileapi/file_stream_writer.h"
-
-namespace base {
-class FilePath;
-class TaskRunner;
-}  // namespace base
-
-namespace net {
-class IOBuffer;
-}  // namespace net
-
-namespace drive {
-
-class FileSystemInterface;
-
-namespace internal {
-
-// The implementation of fileapi::FileStreamWriter for the Drive File System.
-class WebkitFileStreamWriterImpl : public fileapi::FileStreamWriter {
- public:
-  // Callback to return the FileSystemInterface instance. This is an
-  // injecting point for testing.
-  // Note that the callback will be copied between threads (IO and UI), and
-  // will be called on UI thread.
-  typedef base::Callback<FileSystemInterface*()> FileSystemGetter;
-
-  // Creates a writer for a file at |file_path| on FileSystem returned by
-  // |file_system_getter| that starts writing from |offset|.
-  // When invalid parameters are set, the first call to Write() method fails.
-  // Uses |file_task_runner| for local file operations.
-  WebkitFileStreamWriterImpl(const FileSystemGetter& file_system_getter,
-                             base::TaskRunner* file_task_runner,
-                             const base::FilePath& file_path,
-                             int64 offset);
-  virtual ~WebkitFileStreamWriterImpl();
-
-  // FileWriter override.
-  virtual int Write(net::IOBuffer* buf, int buf_len,
-                    const net::CompletionCallback& callback) OVERRIDE;
-  virtual int Cancel(const net::CompletionCallback& callback) OVERRIDE;
-  virtual int Flush(const net::CompletionCallback& callback) OVERRIDE;
-
- private:
-  // Part of Write(). Called after CreateWritableSnapshotFile is completed.
-  void WriteAfterCreateWritableSnapshotFile(
-      net::IOBuffer* buf,
-      int buf_len,
-      base::File::Error open_result,
-      const base::FilePath& local_path,
-      const base::Closure& close_callback_on_ui_thread);
-
-  FileSystemGetter file_system_getter_;
-  scoped_refptr<base::TaskRunner> file_task_runner_;
-  const base::FilePath file_path_;
-  const int64 offset_;
-
-  scoped_ptr<fileapi::FileStreamWriter> local_file_writer_;
-  base::Closure close_callback_on_ui_thread_;
-  net::CompletionCallback pending_write_callback_;
-  net::CompletionCallback pending_cancel_callback_;
-
-  // 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<WebkitFileStreamWriterImpl> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebkitFileStreamWriterImpl);
-};
-
-}  // namespace internal
-}  // namespace drive
-
-#endif  // CHROME_BROWSER_CHROMEOS_DRIVE_WEBKIT_FILE_STREAM_WRITER_IMPL_H_