diff -r 000000000000 -r 6474c204b198 dom/devicestorage/PDeviceStorageRequest.ipdl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/devicestorage/PDeviceStorageRequest.ipdl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,105 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+include protocol PBlob;
+include protocol PContent;
+
+namespace mozilla {
+namespace dom {
+namespace devicestorage {
+
+
+struct ErrorResponse
+{
+  nsString error;
+};
+
+struct SuccessResponse
+{
+};
+
+struct FileDescriptorResponse
+{
+  FileDescriptor fileDescriptor;
+};
+
+struct BlobResponse
+{
+  PBlob blob;
+};
+
+struct DeviceStorageFileValue
+{
+  nsString storageName;
+  nsString name;
+};
+
+struct EnumerationResponse
+{
+  nsString type;
+  nsString rootdir;
+  DeviceStorageFileValue[] paths;
+};
+
+struct FreeSpaceStorageResponse
+{
+  uint64_t freeBytes;
+};
+
+struct UsedSpaceStorageResponse
+{
+  uint64_t usedBytes;
+};
+
+struct AvailableStorageResponse
+{
+  nsString mountState;
+};
+
+struct StorageStatusResponse
+{
+  nsString storageStatus;
+};
+
+struct FormatStorageResponse
+{
+  nsString mountState;
+};
+
+struct MountStorageResponse
+{
+  nsString storageStatus;
+};
+
+struct UnmountStorageResponse
+{
+  nsString storageStatus;
+};
+
+union DeviceStorageResponseValue
+{
+  ErrorResponse;
+  SuccessResponse;
+  FileDescriptorResponse;
+  BlobResponse;
+  EnumerationResponse;
+  FreeSpaceStorageResponse;
+  UsedSpaceStorageResponse;
+  AvailableStorageResponse;
+  StorageStatusResponse;
+  FormatStorageResponse;
+  MountStorageResponse;
+  UnmountStorageResponse;
+};
+
+sync protocol PDeviceStorageRequest {
+    manager PContent;
+child:
+    __delete__(DeviceStorageResponseValue response);
+};
+
+} // namespace devicestorage
+} // namespace dom
+} // namespace mozilla