Convert more interfaces to the new thunk system.

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