[fsp] Refactor handling operations.

chrome/browser/chromeos/file_system_provider/operations/unmount.cc

+// 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.
+
+#include "chrome/browser/chromeos/file_system_provider/operations/unmount.h"
+
+#include "base/values.h"
+#include "chrome/common/extensions/api/file_system_provider.h"
+
+namespace chromeos {
+namespace file_system_provider {
+namespace operations {
+
+Unmount::Unmount(extensions::EventRouter* event_router,
+                 const ProvidedFileSystemInfo& file_system_info,
+                 const fileapi::AsyncFileUtil::StatusCallback& callback)
+    : Operation(event_router, file_system_info), callback_(callback) {
+}
+
+Unmount::~Unmount() {
+}
+
+bool Unmount::Execute(int request_id) {
+  scoped_ptr<base::ListValue> values(new base::ListValue);
+  return SendEvent(
+      request_id,
+      extensions::api::file_system_provider::OnUnmountRequested::kEventName,
+      values.Pass());
+}
+
+void Unmount::OnSuccess(int /* request_id */,
+                        scoped_ptr<RequestValue> /* result */,
+                        bool /* has_next */) {
+  callback_.Run(base::File::FILE_OK);
+}
+
+void Unmount::OnError(int /* request_id */, base::File::Error error) {
+  callback_.Run(error);
+}
+
+}  // namespace operations
+}  // namespace file_system_provider
+}  // namespace chromeos