Add InputEvent and EventPacket types for batched input delivery

content/common/input/event_packet.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/event_packet.h"
+
+#include "content/common/input/input_event.h"
+
+namespace content {
+
+EventPacket::EventPacket() : id(0) {}
+
+EventPacket::~EventPacket() {}
+
+void EventPacket::Add(scoped_ptr<InputEvent> event) {
+  DCHECK(event);
+  DCHECK(event->valid());
+  events.push_back(event.release());
+}
+
+
+}  // namespace content