Implement an input event resource.

ppapi/shared_impl/instance_impl.h

+// 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.
+
+#ifndef PPAPI_SHARED_IMPL_INSTANCE_IMPL_H_
+#define PPAPI_SHARED_IMPL_INSTANCE_IMPL_H_
+
+#include "ppapi/c/pp_stdint.h"
+
+namespace ppapi {
+
+class InstanceImpl {
+ public:
+  virtual ~InstanceImpl();
+
+  // Error checks the given resquest to Request[Filtering]InputEvents. Returns
+  // PP_OK if the given classes are all valid, PP_ERROR_NOTSUPPORTED if not.
+  int32_t ValidateRequestInputEvents(bool is_filtering, uint32_t event_classes);
+};
+
+}  // namespace ppapi
+
+#endif  // PPAPI_SHARED_IMPL_INSTANCE_IMPL_H_