[fsp] Decouple file_service_provider::Service.

chrome/browser/chromeos/file_system_provider/fake_provided_file_system.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/fake_provided_file_system.h"
+
+#include "base/files/file.h"
+#include "base/message_loop/message_loop_proxy.h"
+#include "chrome/browser/chromeos/file_system_provider/request_manager.h"
+#include "extensions/browser/event_router.h"
+
+namespace chromeos {
+namespace file_system_provider {
+
+FakeProvidedFileSystem::FakeProvidedFileSystem(
+    const ProvidedFileSystemInfo& file_system_info)
+    : file_system_info_(file_system_info) {}
+
+FakeProvidedFileSystem::~FakeProvidedFileSystem() {}
+
+bool FakeProvidedFileSystem::RequestUnmount(
+    const fileapi::AsyncFileUtil::StatusCallback& callback) {
+  base::MessageLoopProxy::current()->PostTask(
+      FROM_HERE, base::Bind(callback, base::File::FILE_OK));
+  return true;
+}
+
+const ProvidedFileSystemInfo& FakeProvidedFileSystem::GetFileSystemInfo()
+    const {
+  return file_system_info_;
+}
+
+ProvidedFileSystemInterface* FakeProvidedFileSystem::Create(
+    extensions::EventRouter* event_router,
+    RequestManager* request_manager,
+    const ProvidedFileSystemInfo& file_system_info) {
+  // TODO(mtomasz): Create a request manager in ProvidedFileSystem, since it is
+  // only used by ProvidedFileSystem, instead of having a profile wide one.
+  // As a result, there will be no need to pass the request manager to the
+  // factory callback.
+  return new FakeProvidedFileSystem(file_system_info);
+}
+
+}  // namespace file_system_provider
+}  // namespace chromeos