Add a network state notification interface to Pepper. Some plugins will need

ppapi/c/dev/ppp_network_state_dev.h

+/* Copyright (c) 2011 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.
+ */
+#ifndef PPAPI_C_DEV_PPP_NETWORK_STATE_DEV_H_
+#define PPAPI_C_DEV_PPP_NETWORK_STATE_DEV_H_
+
+/**
+ * @file
+ * This file defines the PPP_NetworkState interface.
+ */
+
+#define PPP_NETWORK_STATE_DEV_INTERFACE "PPP_NetworkState(Dev);0.1"
+
+struct PPP_NetworkState_Dev {
+  /**
+   * Notification that the online state has changed for the user's network.
+   * This will change as a result of a network cable being plugged or
+   * unplugged, WiFi connections going up and down, or other events.
+   *
+   * Note that being "online" isn't a guarantee that any particular connections
+   * will succeed.
+   */
+  void (*SetOnLine)(PP_Bool is_online);
+};
+
+#endif  // PPAPI_C_DEV_PPP_NETWORK_STATE_DEV_H_