Add InputEvent and EventPacket types for batched input delivery

content/common/input/generic_event.cc

+// 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.
+
+#include "content/common/input/generic_event.h"
+
+#include "ipc/ipc_message.h"
+
+namespace content {
+
+GenericEvent::GenericEvent(int64 id)
+    : InputEvent(InputEvent::GENERIC, id) {}
+
+scoped_ptr<GenericEvent> GenericEvent::Create() {
+  return make_scoped_ptr(new GenericEvent(0));
+}
+
+scoped_ptr<GenericEvent> GenericEvent::Create(
+    int64 id, scoped_ptr<IPC::Message> message) {
+  scoped_ptr<GenericEvent> event(new GenericEvent(id));
+  event->message = message.Pass();
+  return event.Pass();
+}
+
+const GenericEvent* GenericEvent::EventCast(const InputEvent* event) {
+  DCHECK_EQ(InputEvent::GENERIC, event->type);
+  return static_cast<const GenericEvent*>(event);
+}
+
+} // namespace content