Remove CloseFile from FileSystem.

chrome/browser/chromeos/drive/file_system/close_file_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/close_file_operation.h"
-
-#include "base/logging.h"
-#include "base/message_loop/message_loop_proxy.h"
-#include "base/sequenced_task_runner.h"
-#include "chrome/browser/chromeos/drive/drive.pb.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 {
-
-CloseFileOperation::CloseFileOperation(
-    base::SequencedTaskRunner* blocking_task_runner,
-    OperationObserver* observer,
-    internal::ResourceMetadata* metadata,
-    std::map<base::FilePath, int>* open_files)
-    : blocking_task_runner_(blocking_task_runner),
-      observer_(observer),
-      metadata_(metadata),
-      open_files_(open_files),
-      weak_ptr_factory_(this) {
-}
-
-CloseFileOperation::~CloseFileOperation() {
-}
-
-void CloseFileOperation::CloseFile(const base::FilePath& file_path,
-                                   const FileOperationCallback& callback) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK(!callback.is_null());
-
-  if (open_files_->find(file_path) == open_files_->end()) {
-    // The file is not being opened.
-    base::MessageLoopProxy::current()->PostTask(
-        FROM_HERE, base::Bind(callback, FILE_ERROR_NOT_FOUND));
-    return;
-  }
-
-  ResourceEntry* entry = new ResourceEntry;
-  base::PostTaskAndReplyWithResult(
-      blocking_task_runner_.get(),
-      FROM_HERE,
-      base::Bind(&internal::ResourceMetadata::GetResourceEntryByPath,
-                 base::Unretained(metadata_), file_path, entry),
-      base::Bind(&CloseFileOperation::CloseFileAfterGetResourceEntry,
-                 weak_ptr_factory_.GetWeakPtr(),
-                 file_path, callback, base::Owned(entry)));
-}
-
-void CloseFileOperation::CloseFileAfterGetResourceEntry(
-    const base::FilePath& file_path,
-    const FileOperationCallback& callback,
-    const ResourceEntry* entry,
-    FileError error) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK(!callback.is_null());
-  DCHECK(entry);
-
-  if (error == FILE_ERROR_OK && entry->file_info().is_directory())
-    error = FILE_ERROR_NOT_FOUND;
-
-  DCHECK_GT((*open_files_)[file_path], 0);
-  if (--(*open_files_)[file_path] == 0) {
-    // All clients closes this file, so notify to upload the file.
-    open_files_->erase(file_path);
-    observer_->OnCacheFileUploadNeededByOperation(entry->resource_id());
-  }
-
-  // Then invokes the user-supplied callback function.
-  callback.Run(error);
-}
-
-}  // namespace file_system
-}  // namespace drive