[NaCl SDK] Add initial support for google drive to nacl_io

native_client_sdk/src/libraries/nacl_io/googledrivefs/googledrivefs.cc

+// Copyright 2016 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 "nacl_io/googledrivefs/googledrivefs.h"
+
+#include "nacl_io/filesystem.h"
+#include "nacl_io/node.h"
+#include "nacl_io/path.h"
+
+namespace nacl_io {
+
+GoogleDriveFs::GoogleDriveFs() {}
+
+Error GoogleDriveFs::Init(const FsInitArgs& args) {
+  // TODO: support init
+  LOG_ERROR("init not supported.");
+  return EPERM;
+}
+
+Error GoogleDriveFs::OpenWithMode(const Path& path,
+                                  int open_flags,
+                                  mode_t mode,
+                                  ScopedNode* out_node) {
+  // TODO: support openwithmode
+  LOG_ERROR("openwithmode not supported.");
+  return EPERM;
+}
+
+Error GoogleDriveFs::Mkdir(const Path& path, int permissions) {
+  // TODO: support mkdir
+  LOG_ERROR("mkdir not supported.");
+  return EPERM;
+}
+
+Error GoogleDriveFs::Rmdir(const Path& path) {
+  // TODO: support rmdir
+  LOG_ERROR("rmdir not supported.");
+  return EPERM;
+}
+
+Error GoogleDriveFs::Rename(const Path& path, const Path& newPath) {
+  // TODO: support rename
+  LOG_ERROR("rename not supported.");
+  return EPERM;
+}
+
+Error GoogleDriveFs::Unlink(const Path& path) {
+  // TODO: support unlink
+  LOG_ERROR("unlink not supported.");
+  return EPERM;
+}
+
+Error GoogleDriveFs::Remove(const Path& path) {
+  // TODO: support remove
+  LOG_ERROR("remove not supported.");
+  return EPERM;
+}
+
+}  // namespace nacl_io