Add Pepper API to use UDP

ppapi/thunk/ppb_flash_udp_socket_thunk.cc

Index: ppapi/thunk/ppb_flash_udp_socket_thunk.cc
diff --git a/ppapi/thunk/ppb_flash_udp_socket_thunk.cc b/ppapi/thunk/ppb_flash_udp_socket_thunk.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ee2e13c35e8c9ec52de5c3af134cb2a85ad67d27
--- /dev/null
+++ b/ppapi/thunk/ppb_flash_udp_socket_thunk.cc
@@ -0,0 +1,98 @@
+// 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.
+
+#include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/private/ppb_flash_udp_socket.h"
+#include "ppapi/thunk/common.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_flash_udp_socket_api.h"
+#include "ppapi/thunk/resource_creation_api.h"
+#include "ppapi/thunk/thunk.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+PP_Resource Create(PP_Instance instance) {
+  EnterFunction<ResourceCreationAPI> enter(instance, true);
+  if (enter.failed())
+    return 0;
+  return enter.functions()->CreateFlashUDPSocket(instance);
+}
+
+PP_Bool IsFlashUDPSocket(PP_Resource resource) {
+  EnterResource<PPB_Flash_UDPSocket_API> enter(resource, false);
+  return PP_FromBool(enter.succeeded());
+}
+
+int32_t Bind(PP_Resource udp_socket,
+             const PP_Flash_NetAddress *addr,
+             PP_CompletionCallback callback) {
+  EnterResource<PPB_Flash_UDPSocket_API> enter(udp_socket, true);
+  if (enter.failed())
+    return MayForceCallback(callback, PP_ERROR_BADRESOURCE);
+  int32_t result = enter.object()->Bind(addr, callback);
+  return MayForceCallback(callback, result);
+}
+
+int32_t RecvFrom(PP_Resource udp_socket,
+                 char* buffer,
+                 int32_t num_bytes,
+                 PP_CompletionCallback callback) {
+  EnterResource<PPB_Flash_UDPSocket_API> enter(udp_socket, true);
+  if (enter.failed())
+    return MayForceCallback(callback, PP_ERROR_BADRESOURCE);
+  int32_t result = enter.object()->RecvFrom(buffer,
+                                            num_bytes,
+                                            callback);
+  return MayForceCallback(callback, result);
+}
+
+PP_Bool GetRecvFromAddress(PP_Resource udp_socket,
+                           PP_Flash_NetAddress* addr) {
+  EnterResource<PPB_Flash_UDPSocket_API> enter(udp_socket, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->GetRecvFromAddress(addr);
+}
+
+int32_t SendTo(PP_Resource udp_socket,
+               const char* buffer,
+               int32_t num_bytes,
+               const PP_Flash_NetAddress* addr,
+               PP_CompletionCallback callback) {
+  EnterResource<PPB_Flash_UDPSocket_API> enter(udp_socket, true);
+  if (enter.failed())
+    return MayForceCallback(callback, PP_ERROR_BADRESOURCE);
+  int32_t result = enter.object()->SendTo(buffer, num_bytes, addr, callback);
+  return MayForceCallback(callback, result);
+}
+
+void Close(PP_Resource udp_socket) {
+  EnterResource<PPB_Flash_UDPSocket_API> enter(udp_socket, true);
+  if (enter.succeeded())
+    enter.object()->Close();
+}
+
+const PPB_Flash_UDPSocket g_ppb_flash_udp_socket_thunk = {
+  &Create,
+  &IsFlashUDPSocket,
+  &Bind,
+  &RecvFrom,
+  &GetRecvFromAddress,
+  &SendTo,
+  &Close
+};
+
+}  // namespace
+
+const PPB_Flash_UDPSocket* GetPPB_Flash_UDPSocket_Thunk() {
+  return &g_ppb_flash_udp_socket_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi
+