Add InputEvent and EventPacket types for batched input delivery

content/common/input/input_event_utils.cc

Index: content/common/input/input_event_utils.cc
diff --git a/content/common/input/input_event_utils.cc b/content/common/input/input_event_utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..429f9361ba96aa093a4be9c45a72e21bbf5080b7
--- /dev/null
+++ b/content/common/input/input_event_utils.cc
@@ -0,0 +1,49 @@
+// 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/input_event_utils.h"
+
+#include "content/common/input/event_packet.h"
+#include "content/common/input_messages.h"
+#include "ipc/ipc_message.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
+
+namespace content {
+
+bool IsWebInputEventMessage(const IPC::Message& message) {
+  return message.type() == InputMsg_HandleInputEvent::ID;
+}
+
+bool CrackWebInputEventMessage(const IPC::Message& message,
+                               const WebKit::WebInputEvent** output_event,
+                               ui::LatencyInfo* output_latency_info,
+                               bool* optional_output_is_keyboard_shortcut) {
+  DCHECK(IsWebInputEventMessage(message));
+  DCHECK(output_event);
+  DCHECK(output_latency_info);
+  bool output_is_keyboard_shortcut;
+  if (!optional_output_is_keyboard_shortcut)
+    optional_output_is_keyboard_shortcut = &output_is_keyboard_shortcut;
+  return InputMsg_HandleInputEvent::Read(&message,
+                                         output_event,
+                                         output_latency_info,
+                                         optional_output_is_keyboard_shortcut);
+}
+
+bool IsEventPacketMessage(const IPC::Message& message) {
+  return message.type() == InputMsg_HandleEventPacket::ID ||
+         message.type() == InputHostMsg_HandleEventPacket_ACK::ID;
+
+}
+
+bool CrackEventPacketMessage(const IPC::Message& message,
+                             EventPacket* output_packet) {
+  DCHECK(IsEventPacketMessage(message));
+  DCHECK(output_packet);
+
+  PickleIterator iter(message);
+  return ReadParam(&message, &iter, output_packet);
+}
+
+} // namespace content