PPAPI: Add PluginPrivateFileSystem

ppapi/api/private/ppb_plugin_private_file_system_private.idl

+/* Copyright 2013 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.
+ */
+
+[generate_thunk,thunk_include="ppapi/thunk/ppb_plugin_private_file_system_private_api.h"]
+
+/**
+ * This file contains the <code>PPB_PluginPrivateFileSystem_Private</code> interface.
+ */
+label Chrome {
+  M32 = 0.1
+};
+
+/* <code>PPB_PluginPrivateFileSystem_Private</code> interface */
+interface PPB_PluginPrivateFileSystem_Private {

[teravest, 2013/10/29 17:14:11]

It would be nice to unify this with PPB_Ext_CrxFileSystem_Private; I don't like
that we're creating interfaces for every separate file system time. It seems
like the two interfaces should be unified. I'll follow up on that and CC you.

[nhiroki, 2013/11/12 13:36:15]

Done by http://crrev.com/233807

+  /**
+   * Open() opens the plugin private file system.
+   *
+   * @param[in] fs A <code>PP_Resource</code> corresponding to a
+   * PluginPrivateFileSystem.
+   * @param[out] file_system An output <code>PP_Resource</code> corresponding
+   * to a PPB_FileSystem.
+   * @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
+   * completion of Open.
+   *
+   * @return An int32_t containing an error code from <code>pp_errors.h</code>.
+   */
+  [singleton,api=PPB_PluginPrivateFileSystem_Private_API]
+  int32_t Open([in] PP_Instance instance,
+               [out] PP_Resource file_system,
+               [in] PP_CompletionCallback callback);
+};