Stub for Privet file system

chrome/browser/local_discovery/storage/privet_filesystem_backend.cc

Index: chrome/browser/local_discovery/storage/privet_filesystem_backend.cc
diff --git a/chrome/browser/local_discovery/storage/privet_filesystem_backend.cc b/chrome/browser/local_discovery/storage/privet_filesystem_backend.cc
new file mode 100644
index 0000000000000000000000000000000000000000..06518e01cc7ac27716fc59a596eda93fbf3cfde8
--- /dev/null
+++ b/chrome/browser/local_discovery/storage/privet_filesystem_backend.cc
@@ -0,0 +1,136 @@
+// 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/local_discovery/storage/privet_filesystem_backend.h"
+
+#include <string>
+
+#include "chrome/browser/local_discovery/storage/privet_filesystem_async_util.h"
+#include "chrome/browser/local_discovery/storage/privet_filesystem_constants.h"
+#include "webkit/browser/fileapi/file_system_operation.h"
+
+namespace local_discovery {
+
+PrivetFileSystemBackend::PrivetFileSystemBackend(
+    fileapi::ExternalMountPoints* mount_points)
+    : mount_points_(mount_points),
+      async_util_(new PrivetFileSystemAsyncUtil()) {
+}
+
+PrivetFileSystemBackend::~PrivetFileSystemBackend() {
+}
+
+bool PrivetFileSystemBackend::CanHandleType(
+    fileapi::FileSystemType type) const {
+  return (type == fileapi::kFileSystemTypePrivet);
+}
+
+void PrivetFileSystemBackend::Initialize(fileapi::FileSystemContext* context) {
+  mount_points_->RegisterFileSystem(
+      "privet",
+      fileapi::kFileSystemTypePrivet,
+      fileapi::FileSystemMountOption(),
+      base::FilePath(kPrivetFilePath));
+}
+
+void PrivetFileSystemBackend::OpenFileSystem(
+    const GURL& origin_url,
+    fileapi::FileSystemType type,
+    fileapi::OpenFileSystemMode mode,
+    const OpenFileSystemCallback& callback) {
+  // Copied from src/chrome/browser/chromeos/fileapi/file_system_backend.cc
+  // This is deprecated for non-sandboxed filesystems.
+  NOTREACHED();
+  callback.Run(GURL(), std::string(), base::PLATFORM_FILE_ERROR_SECURITY);
+}
+
+fileapi::FileSystemQuotaUtil* PrivetFileSystemBackend::GetQuotaUtil() {
+  // No quota support.
+  return NULL;
+}
+
+// TODO(noamsml): Any access controls
+
+bool PrivetFileSystemBackend::IsAccessAllowed(
+    const fileapi::FileSystemURL& url) const {
+  // TODO(noamsml): Implement (http://crbug.com/332182)
+  return true;
+}
+
+void PrivetFileSystemBackend::GrantFullAccessToExtension(
+    const std::string& extension_id) {
+  // TODO(noamsml): Implement (http://crbug.com/332182)
+}
+
+void PrivetFileSystemBackend::GrantFileAccessToExtension(
+    const std::string& extension_id, const base::FilePath& virtual_path)  {
+  // TODO(noamsml): Implement (http://crbug.com/332182)
+}
+
+void PrivetFileSystemBackend::RevokeAccessForExtension(
+    const std::string& extension_id) {
+  // TODO(noamsml): Implement (http://crbug.com/332182)
+}
+
+// Copied from file_system_backend.cc:193
+std::vector<base::FilePath>
+PrivetFileSystemBackend::GetRootDirectories() const {
+  std::vector<fileapi::MountPoints::MountPointInfo> mount_points;
+  mount_points_->AddMountPointInfosTo(&mount_points);
+  // System mount pints
+
+  std::vector<base::FilePath> root_dirs;
+  for (size_t i = 0; i < mount_points.size(); ++i)
+    root_dirs.push_back(mount_points[i].path);
+  return root_dirs;
+}
+
+fileapi::AsyncFileUtil* PrivetFileSystemBackend::GetAsyncFileUtil(
+    fileapi::FileSystemType type) {
+  return async_util_.get();
+}
+
+fileapi::CopyOrMoveFileValidatorFactory*
+PrivetFileSystemBackend::GetCopyOrMoveFileValidatorFactory(
+    fileapi::FileSystemType type, base::PlatformFileError* error_code) {
+  DCHECK(error_code);
+  *error_code = base::PLATFORM_FILE_OK;
+  return NULL;
+}
+
+fileapi::FileSystemOperation*
+PrivetFileSystemBackend::CreateFileSystemOperation(
+    const fileapi::FileSystemURL& url,
+    fileapi::FileSystemContext* context,
+    base::PlatformFileError* error_code) const {
+  return fileapi::FileSystemOperation::Create(
+      url, context,
+      make_scoped_ptr(new fileapi::FileSystemOperationContext(context)));
+}
+
+scoped_ptr<webkit_blob::FileStreamReader>
+PrivetFileSystemBackend::CreateFileStreamReader(
+    const fileapi::FileSystemURL& url,
+    int64 offset,
+    const base::Time& expected_modification_time,
+    fileapi::FileSystemContext* context) const {
+  return scoped_ptr<webkit_blob::FileStreamReader>();
+}
+
+
+scoped_ptr<fileapi::FileStreamWriter>
+PrivetFileSystemBackend::CreateFileStreamWriter(
+    const fileapi::FileSystemURL& url,
+    int64 offset,
+    fileapi::FileSystemContext* context) const {
+  return scoped_ptr<fileapi::FileStreamWriter>();
+}
+
+bool PrivetFileSystemBackend::GetVirtualPath(
+    const base::FilePath& filesystem_path,
+    base::FilePath* virtual_path) {
+  return mount_points_->GetVirtualPath(filesystem_path, virtual_path);
+}
+
+}  // namespace local_discovery