PPAPI: Force async callback invocation option.

webkit/plugins/ppapi/common.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 "webkit/plugins/ppapi/common.h"
+
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/ppb_core.h"
+#include "webkit/plugins/ppapi/plugin_module.h"
+
+namespace webkit {
+namespace ppapi {
+
+int32_t MayForceCallback(PP_CompletionCallback callback, int32_t result) {
+  if (result == PP_OK_COMPLETIONPENDING)
+    return result;
+
+  if (callback.func == NULL ||
+      (callback.flags & PP_COMPLETIONCALLBACK_FLAG_OPTIONAL) != 0)
+    return result;
+
+  PluginModule::GetCore()->CallOnMainThread(0, callback, result);
+  return PP_OK_COMPLETIONPENDING;
+}
+
+}  // namespace ppapi
+}  // namespace webkit