Add InputEvent and EventPacket types for batched input delivery

content/common/input/generic_input_event.h

+// Copyright (c) 2013 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 CONTENT_COMMON_INPUT_GENERIC_INPUT_EVENT_H_
+#define CONTENT_COMMON_INPUT_GENERIC_INPUT_EVENT_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
+#include "content/common/input/input_event.h"
+#include "ipc/ipc_message.h"
+
+namespace content {
+
+// An event with a generic IPC message payload of type InputMsg_*.
+class CONTENT_EXPORT GenericInputEvent : public InputEvent {
+ public:
+  static scoped_ptr<GenericInputEvent> Create();
+  static scoped_ptr<GenericInputEvent> Create(int64 id,
+                                              scoped_ptr<IPC::Message> message);
+
+  virtual ~GenericInputEvent();
+
+  scoped_ptr<IPC::Message> message;
+
+  static const GenericInputEvent* EventCast(const InputEvent* event);
+
+ protected:
+  explicit GenericInputEvent(int64 id);
+};
+
+}  // namespace content
+
+#endif // CONTENT_COMMON_INPUT_GENERIC_INPUT_EVENT_H_