Adding LatencyInfo to mojom::Event.

ui/events/mojo/event.mojom

 // Copyright 2014 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.
 
 module ui.mojom;
 
 import "ui/events/mojo/event_constants.mojom";
 import "ui/events/mojo/keyboard_codes.mojom";
+import "ui/events/mojo/latency_info.mojom";
 
 struct KeyData {
   // The chromium event key code; these values are from the ui/ KeyCode enum,
   // which has the fun property of being neither consistently the Windows key
   // code, nor the X11 keycodes. (This value is consistent across platforms
   // for basic ASCII characters; it will differ for modifiers. We don't define
   // this as a mojo enum because mojom doesn't appear to have a platform
   // dependent preprocessor yet.)
   //
   // TODO(erg): Remove this, and declare Win32 keycodes correct by fiat. We can
@@ skipping 89 matching lines @@
   EventType action;
   // A bitfield of kEventFlag* and kMouseEventFlag* values in
   // input_event_constants.mojom.
   //
   // TODO(sky): parts of this should move to PointerData.
   int32 flags;
   // Time in microseconds from when the platform was started.
   // This value accurately orders events w.r.t. to each other but
   // does not position them at an absolute time.
   int64 time_stamp;
+  LatencyInfo latency;
   KeyData? key_data;
   PointerData? pointer_data;
 };