Revert of Move LatencyInfo to ui/latency_info

ui/events/ipc/latency_info_param_traits_macros.h

Index: ui/events/ipc/latency_info_param_traits_macros.h
diff --git a/ui/events/ipc/latency_info_param_traits_macros.h b/ui/events/ipc/latency_info_param_traits_macros.h
new file mode 100644
index 0000000000000000000000000000000000000000..40bf73845b34a52b07ed1923d4534ec4924acbf3
--- /dev/null
+++ b/ui/events/ipc/latency_info_param_traits_macros.h
@@ -0,0 +1,29 @@
+// Copyright 2015 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 UI_EVENTS_IPC_LATENCY_INFO_PARAM_TRAITS_MACROS_H_
+#define UI_EVENTS_IPC_LATENCY_INFO_PARAM_TRAITS_MACROS_H_
+
+#include "ipc/ipc_message_macros.h"
+#include "ui/events/ipc/events_ipc_export.h"
+#include "ui/events/latency_info.h"
+
+#undef IPC_MESSAGE_EXPORT
+#define IPC_MESSAGE_EXPORT EVENTS_IPC_EXPORT
+
+IPC_ENUM_TRAITS_MAX_VALUE(ui::LatencyComponentType,
+                          ui::LATENCY_COMPONENT_TYPE_LAST)
+
+IPC_STRUCT_TRAITS_BEGIN(ui::LatencyInfo::LatencyComponent)
+  IPC_STRUCT_TRAITS_MEMBER(sequence_number)
+  IPC_STRUCT_TRAITS_MEMBER(event_time)
+  IPC_STRUCT_TRAITS_MEMBER(event_count)
+IPC_STRUCT_TRAITS_END()
+
+IPC_STRUCT_TRAITS_BEGIN(ui::LatencyInfo::InputCoordinate)
+  IPC_STRUCT_TRAITS_MEMBER(x)
+  IPC_STRUCT_TRAITS_MEMBER(y)
+IPC_STRUCT_TRAITS_END()
+
+#endif // UI_EVENTS_IPC_LATENCY_INFO_PARAM_TRAITS_MACROS_H_