Add Pepper API to use UDP

ppapi/thunk/ppb_flash_udp_socket_api.h

Index: ppapi/thunk/ppb_flash_udp_socket_api.h
diff --git a/ppapi/thunk/ppb_flash_udp_socket_api.h b/ppapi/thunk/ppb_flash_udp_socket_api.h
new file mode 100644
index 0000000000000000000000000000000000000000..afc7738a77a3d9ac5a281f75d03bc8ac2b2a3375
--- /dev/null
+++ b/ppapi/thunk/ppb_flash_udp_socket_api.h
@@ -0,0 +1,34 @@
+// 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_THUNK_PPB_FLASH_UDP_SOCKET_API_H_
+#define PPAPI_THUNK_PPB_FLASH_UDP_SOCKET_API_H_
+
+#include "ppapi/c/private/ppb_flash_udp_socket.h"
+
+namespace ppapi {
+namespace thunk {
+
+class PPB_Flash_UDPSocket_API {
+ public:
+  virtual ~PPB_Flash_UDPSocket_API() {}
+
+  virtual int32_t Bind(const PP_Flash_NetAddress* addr,
+                       PP_CompletionCallback callback) = 0;
+  virtual int32_t RecvFrom(char* buffer,
+                           int32_t num_bytes,
+                           PP_CompletionCallback callback) = 0;
+  virtual PP_Bool GetRecvFromAddress(PP_Flash_NetAddress* addr) = 0;
+  virtual int32_t SendTo(const char* buffer,
+                         int32_t num_bytes,
+                         const PP_Flash_NetAddress* addr,
+                         PP_CompletionCallback callback) = 0;
+  virtual void Close() = 0;
+};
+
+}  // namespace thunk
+}  // namespace ppapi
+
+#endif  // PPAPI_THUNK_PPB_FLASH_UDP_SOCKET_API_H_
+