Refactor PPB_NetworkMonitor_Private interface to use CompletionCallback.

ppapi/api/private/ppb_network_monitor_private.idl

 /* Copyright (c) 2012 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.
  */
 
 /**
  * This file defines the <code>PPB_NetworkMonitor_Private</code> interface.
  */
 
+[generate_thunk]
+
 label Chrome {
-  M19 = 0.2
+  M31 = 0.3
 };
 
 /**
- * <code>PPB_NetworkMonitor_Callback</code> is a callback function
- * type that is used to receive notifications about network
- * configuration changes. The <code>network_list</code> passed to this
- * callback is a <code>PPB_NetworkList_Private</code> resource that
- * contains current configuration of network interfaces.
- */
-typedef void PPB_NetworkMonitor_Callback([inout] mem_t user_data,
-                                         [in] PP_Resource network_list);
-
-
-/**
  * The <code>PPB_NetworkMonitor_Private</code> provides access to
  * notifications of network configuration changes.
  */
 interface PPB_NetworkMonitor_Private {
   /**
-   * Starts network change monitoring. The specified
-   * <code>callback</code> will be called on the main thread once
-   * after this method is called (to supply the initial network
-   * configuration) and then later every time network configuration
-   * changes. Notifications are stopped when the returned resource is
-   * destroyed. If the plugin doesn't have access to the network list
-   * then the callback will be called once with the
-   * <code>network_list</code> parameter is set to 0.
+   * Creates a Network Monitor resource.
    *
-   * @param[in] callback The callback that will be called every time
-   * network configuration changes or NULL to stop network monitoring.
+   * @param[in] instance A <code>PP_Instance</code> identifying one instance of
+   * a module.
    *
-   * @param[inout] user_data The data to be passed to the callback on
-   * each call.
+   * @return A <code>PP_Resource</code> corresponding to a network monitor or 0
+   * on failure.
+   */
+  PP_Resource Create([in] PP_Instance instance);
+
+
+  /**
+   * Gets current network configuration. When called for the first time,
+   * completes as soon as the current network configuration is received from
+   * the browser. Each consequent call will wait for network list changes,
+   * returning a new <code>PPB_NetworkList</code> resource every time.
    *
-   * @return A <code>PP_Resource</code> containing the created
-   * NetworkMonitor resource.
+   * @param[in] network_monitor A <code>PP_Resource</code> corresponding to a
+   * network monitor.
+   * @param[out] network_list The <code>PPB_NetworkList<code> resource with the
+   * current state of network interfaces.
+   * @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
+   * completion.
+   *
+   * @return An int32_t containing an error code from <code>pp_errors.h</code>.
+   * <code>PP_ERROR_NOACCESS</code> will be returned if the caller doesn't have
+   * required permissions.
    */
-  PP_Resource Create([in] PP_Instance instance,
-                     [in] PPB_NetworkMonitor_Callback callback,
-                     [inout] mem_t user_data);
+  int32_t UpdateNetworkList([in] PP_Resource network_monitor,
+                            [out] PP_Resource network_list,
+                            [in] PP_CompletionCallback callback);
 
   /**
    * Determines if the specified <code>resource</code> is a
    * <code>NetworkMonitor</code> object.
    *
    * @param[in] resource A <code>PP_Resource</code> resource.
    *
    * @return Returns <code>PP_TRUE</code> if <code>resource</code> is
    * a <code>PPB_NetworkMonitor_Private</code>, <code>PP_FALSE</code>
    * otherwise.
    */
   PP_Bool IsNetworkMonitor([in] PP_Resource resource);
 };