Add InputEvent and EventPacket types for batched input delivery

content/common/input/ipc_input_event_payload.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_IPC_INPUT_EVENT_PAYLOAD_H_
+#define CONTENT_COMMON_INPUT_IPC_INPUT_EVENT_PAYLOAD_H_
+
+#include "base/basictypes.h"
+#include "content/common/content_export.h"
+#include "content/common/input/input_event.h"
+#include "ipc/ipc_message.h"
+
+namespace content {
+
+// Wraps a generic IPC message of type InputMsg_*.
+class CONTENT_EXPORT IPCInputEventPayload : public InputEvent::Payload {
+ public:
+  static scoped_ptr<IPCInputEventPayload> Create();
+  static scoped_ptr<IPCInputEventPayload> Create(
+      scoped_ptr<IPC::Message> message);
+
+  static const IPCInputEventPayload* Cast(const Payload* payload);
+
+  virtual ~IPCInputEventPayload();
+
+  // InputEvent::Payload
+  virtual Type GetType() const OVERRIDE;
+
+  scoped_ptr<IPC::Message> message;
+
+ protected:
+  IPCInputEventPayload();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(IPCInputEventPayload);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_INPUT_IPC_INPUT_EVENT_PAYLOAD_H_