Add Pepper API to use UDP

ppapi/api/private/ppb_flash_udp_socket.idl

Index: ppapi/api/private/ppb_flash_udp_socket.idl
diff --git a/ppapi/api/private/ppb_flash_udp_socket.idl b/ppapi/api/private/ppb_flash_udp_socket.idl
new file mode 100644
index 0000000000000000000000000000000000000000..7328db857e2ab45764243cc832e2d4597fd5e473
--- /dev/null
+++ b/ppapi/api/private/ppb_flash_udp_socket.idl
@@ -0,0 +1,59 @@
+/* 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.
+ */
+
+/**
+ * This file defines the <code>PPB_Flash_UDPSocket</code> interface.
+ */
+
+label Chrome {
+  M16 = 0.1
+};
+
+interface PPB_Flash_UDPSocket {
+  /**
+   * Creates a UDP socket resource.
+   */
+  PP_Resource Create([in] PP_Instance instance_id);
+
+  /**
+   * Determines if a given resource is a UDP socket.
+   */
+  PP_Bool IsFlashUDPSocket([in] PP_Resource resource_id);
+
+  /* Creates a socket and binds to the address given by |addr|. */
+  int32_t Bind([in] PP_Resource udp_socket,
+               [in] PP_Flash_NetAddress addr,
+               [in] PP_CompletionCallback callback);
+
+  /* Performs a non-blocking recvfrom call on socket.
+   * Bind must be called first. |callback| is invoked when recvfrom
+   * reads data.  You must call GetRecvFromAddress to recover the
+   * address the data was retrieved from.
+   */
+  int32_t RecvFrom([in] PP_Resource udp_socket,
+                   [out] str_t buffer,
+                   [in] int32_t num_bytes,
+                   [in] PP_CompletionCallback callback);
+
+  /* Upon successful completion of RecvFrom, the address that the data
+   * was received from is stored in |addr|.
+   */
+  PP_Bool GetRecvFromAddress([in] PP_Resource udp_socket,
+                             [out] PP_Flash_NetAddress addr);
+
+  /* Performs a non-blocking sendto call on the socket created and
+   * bound(has already called Bind).  The callback |callback| is
+   * invoked when sendto completes.
+   */
+  int32_t SendTo([in] PP_Resource udp_socket,
+                 [in] str_t buffer,
+                 [in] int32_t num_bytes,
+                 [in] PP_Flash_NetAddress addr,
+                 [in] PP_CompletionCallback callback);
+
+  /* Cancels all pending reads and writes, and closes the socket. */
+  void Close([in] PP_Resource udp_socket);
+};
+