[fsp] Add support for opening files.

chrome/browser/chromeos/file_system_provider/operations/open_file.h

 // Copyright 2014 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_FILE_SYSTEM_PROVIDER_OPERATIONS_READ_DIRECTORY_H_
-#define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_READ_DIRECTORY_H_
+#ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_OPEN_FILE_H_
+#define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_OPEN_FILE_H_
 
 #include "base/files/file.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/file_system_provider/operations/operation.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
+#include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
 #include "chrome/browser/chromeos/file_system_provider/request_value.h"
 #include "webkit/browser/fileapi/async_file_util.h"
 
 namespace base {
 class FilePath;
 }  // namespace base
 
 namespace extensions {
 class EventRouter;
 }  // namespace extensions
 
 namespace chromeos {
 namespace file_system_provider {
 namespace operations {
 
-// Bridge between fileapi read directory operation and providing extension's
-// read directory request. Created per request.
-class ReadDirectory : public Operation {
+// Opens a file for either read or write, with optionally creating the file
+// first. Note, that this is part of fileapi::CreateOrOpen file, but it does
+// not download the file locally. Created per request.
+class OpenFile : public Operation {
  public:
-  ReadDirectory(extensions::EventRouter* event_router,
-                const ProvidedFileSystemInfo& file_system_info,
-                const base::FilePath& directory_path,
-                const fileapi::AsyncFileUtil::ReadDirectoryCallback& callback);
-  virtual ~ReadDirectory();
+  OpenFile(extensions::EventRouter* event_router,
+           const ProvidedFileSystemInfo& file_system_info,
+           const base::FilePath& file_path,
+           ProvidedFileSystemInterface::OpenFileMode mode,
+           bool create,
+           const fileapi::AsyncFileUtil::StatusCallback& callback);
+  virtual ~OpenFile();
 
   // Operation overrides.
   virtual bool Execute(int request_id) OVERRIDE;
   virtual void OnSuccess(int request_id,
                          scoped_ptr<RequestValue> result,
                          bool has_next) OVERRIDE;
   virtual void OnError(int request_id, base::File::Error error) OVERRIDE;
 
  private:
-  base::FilePath directory_path_;
-  const fileapi::AsyncFileUtil::ReadDirectoryCallback callback_;
+  base::FilePath file_path_;
+  ProvidedFileSystemInterface::OpenFileMode mode_;
+  bool create_;
+  const fileapi::AsyncFileUtil::StatusCallback callback_;
 
-  DISALLOW_COPY_AND_ASSIGN(ReadDirectory);
+  DISALLOW_COPY_AND_ASSIGN(OpenFile);
 };
 
 }  // namespace operations
 }  // namespace file_system_provider
 }  // namespace chromeos
 
-#endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_READ_DIRECTORY_H_
+#endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_OPEN_FILE_H_