Convert more interfaces to the new thunk system.

ppapi/thunk/ppb_file_io_trusted_thunk.cc

+// 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/dev/ppb_file_io_trusted_dev.h"
+#include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/thunk/thunk.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_file_io_api.h"
+#include "ppapi/thunk/resource_creation_api.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+int32_t GetOSFileDescriptor(PP_Resource file_io) {
+  EnterResource<PPB_FileIO_API> enter(file_io, true);
+  if (enter.failed())
+    return PP_ERROR_BADRESOURCE;
+  return enter.object()->GetOSFileDescriptor();
+}
+
+int32_t WillWrite(PP_Resource file_io,
+                  int64_t offset,
+                  int32_t bytes_to_write,
+                  PP_CompletionCallback callback) {
+  EnterResource<PPB_FileIO_API> enter(file_io, true);
+  if (enter.failed())
+    return PP_ERROR_BADRESOURCE;
+  return enter.object()->WillWrite(offset, bytes_to_write, callback);
+}
+
+int32_t WillSetLength(PP_Resource file_io,
+                      int64_t length,
+                      PP_CompletionCallback callback) {
+  EnterResource<PPB_FileIO_API> enter(file_io, true);
+  if (enter.failed())
+    return PP_ERROR_BADRESOURCE;
+  return enter.object()->WillSetLength(length, callback);
+}
+
+const PPB_FileIOTrusted_Dev g_ppb_file_io_trusted_thunk = {
+  &GetOSFileDescriptor,
+  &WillWrite,
+  &WillSetLength
+};
+
+}  // namespace
+
+const PPB_FileIOTrusted_Dev* GetPPB_FileIOTrusted_Thunk() {
+  return &g_ppb_file_io_trusted_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi