Revert 87415 - Convert more interfaces to the new thunk system. This goes up to and including

ppapi/thunk/ppb_file_chooser_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_chooser_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_chooser_api.h"
-#include "ppapi/thunk/resource_creation_api.h"
-
-namespace ppapi {
-namespace thunk {
-
-namespace {
-
-PP_Resource Create(PP_Instance instance,
-                   const PP_FileChooserOptions_Dev* options) {
-  EnterFunction<ResourceCreationAPI> enter(instance, true);
-  if (enter.failed())
-    return 0;
-  return enter.functions()->CreateFileChooser(instance, options);
-}
-
-PP_Bool IsFileChooser(PP_Resource resource) {
-  EnterResource<PPB_FileChooser_API> enter(resource, false);
-  return PP_FromBool(enter.succeeded());
-}
-
-int32_t Show(PP_Resource chooser, PP_CompletionCallback callback) {
-  EnterResource<PPB_FileChooser_API> enter(chooser, true);
-  if (enter.failed())
-    return PP_ERROR_BADRESOURCE;
-  return enter.object()->Show(callback);
-}
-
-PP_Resource GetNextChosenFile(PP_Resource chooser) {
-  EnterResource<PPB_FileChooser_API> enter(chooser, true);
-  if (enter.failed())
-    return 0;
-  return enter.object()->GetNextChosenFile();
-}
-
-const PPB_FileChooser_Dev g_ppb_file_chooser_thunk = {
-  &Create,
-  &IsFileChooser,
-  &Show,
-  &GetNextChosenFile
-};
-
-}  // namespace
-
-const PPB_FileChooser_Dev* GetPPB_FileChooser_Thunk() {
-  return &g_ppb_file_chooser_thunk;
-}
-
-}  // namespace thunk
-}  // namespace ppapi